SELECT 
  cscart_bm_snapping.grid_id as grid_id, 
  cscart_bm_snapping.block_id as block_id, 
  IFNULL(
    dynamic_object_content.content, 
    default_content.content
  ) as content, 
  IFNULL(
    dynamic_object_content.object_id, 
    default_content.object_id
  ) AS object_id, 
  IFNULL(
    dynamic_object_content.object_type, 
    default_content.object_type
  ) AS object_type, 
  cscart_bm_block_statuses.object_ids as object_ids, 
  cscart_bm_snapping.*, 
  cscart_bm_blocks.*, 
  cscart_bm_blocks_descriptions.* 
FROM 
  cscart_bm_snapping 
  LEFT JOIN cscart_bm_blocks ON cscart_bm_blocks.block_id = cscart_bm_snapping.block_id 
  LEFT JOIN cscart_bm_block_statuses ON cscart_bm_snapping.snapping_id = cscart_bm_block_statuses.snapping_id 
  AND cscart_bm_block_statuses.object_type LIKE '' 
  LEFT JOIN cscart_bm_blocks_descriptions ON cscart_bm_blocks.block_id = cscart_bm_blocks_descriptions.block_id 
  LEFT JOIN cscart_bm_blocks_content AS default_content ON cscart_bm_blocks.block_id = default_content.block_id 
  AND cscart_bm_blocks_descriptions.lang_code = default_content.lang_code 
  AND default_content.snapping_id = 0 
  AND default_content.object_id = 0 
  AND default_content.object_type like '' 
  LEFT JOIN cscart_bm_blocks_content AS dynamic_object_content ON cscart_bm_blocks.block_id = dynamic_object_content.block_id 
  AND cscart_bm_blocks_descriptions.lang_code = dynamic_object_content.lang_code 
  AND dynamic_object_content.object_id = 0 
  AND dynamic_object_content.object_type like '' 
WHERE 
  cscart_bm_snapping.grid_id IN (
    448279, 448282, 448280, 448283, 448287, 
    448284, 448285, 448286, 448281, 448288, 
    448289, 448292, 448296, 448290, 448291, 
    448293, 448294, 448295, 448297, 448299, 
    448300, 448301, 448298, 448302, 448304, 
    448308, 448312, 448305, 448309, 448313, 
    448317, 448307, 448310, 448319, 448303, 
    448306, 448311, 448314, 448321, 448315, 
    448322, 448324, 448316, 448318, 448320, 
    448323
  ) 
  AND cscart_bm_blocks_descriptions.lang_code = 'en' 
ORDER BY 
  cscart_bm_snapping.order, 
  cscart_bm_snapping.block_id

Query time 0.00439

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "2769.94"
    },
    "ordering_operation": {
      "using_filesort": true,
      "cost_info": {
        "sort_cost": "1800.37"
      },
      "nested_loop": [
        {
          "table": {
            "table_name": "cscart_bm_snapping",
            "access_type": "range",
            "possible_keys": [
              "grid_id"
            ],
            "key": "grid_id",
            "used_key_parts": [
              "grid_id"
            ],
            "key_length": "4",
            "rows_examined_per_scan": 78,
            "rows_produced_per_join": 78,
            "filtered": "100.00",
            "index_condition": "(`webmarco`.`cscart_bm_snapping`.`grid_id` in (448279,448282,448280,448283,448287,448284,448285,448286,448281,448288,448289,448292,448296,448290,448291,448293,448294,448295,448297,448299,448300,448301,448298,448302,448304,448308,448312,448305,448309,448313,448317,448307,448310,448319,448303,448306,448311,448314,448321,448315,448322,448324,448316,448318,448320,448323))",
            "cost_info": {
              "read_cost": "139.61",
              "eval_cost": "15.60",
              "prefix_cost": "155.21",
              "data_read_per_join": "60K"
            },
            "used_columns": [
              "snapping_id",
              "block_id",
              "grid_id",
              "wrapper",
              "user_class",
              "order",
              "status",
              "ab__ab_hide_block"
            ]
          }
        },
        {
          "table": {
            "table_name": "cscart_bm_block_statuses",
            "access_type": "ref",
            "possible_keys": [
              "snapping_id"
            ],
            "key": "snapping_id",
            "used_key_parts": [
              "snapping_id"
            ],
            "key_length": "4",
            "ref": [
              "webmarco.cscart_bm_snapping.snapping_id"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 78,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "78.00",
              "eval_cost": "15.60",
              "prefix_cost": "248.81",
              "data_read_per_join": "9K"
            },
            "used_columns": [
              "snapping_id",
              "object_ids",
              "object_type"
            ],
            "attached_condition": "<if>(is_not_null_compl(cscart_bm_block_statuses), ((`webmarco`.`cscart_bm_snapping`.`snapping_id` = `webmarco`.`cscart_bm_block_statuses`.`snapping_id`) and (`webmarco`.`cscart_bm_block_statuses`.`object_type` like '')), true)"
          }
        },
        {
          "table": {
            "table_name": "cscart_bm_blocks",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "block_id"
            ],
            "key_length": "4",
            "ref": [
              "webmarco.cscart_bm_snapping.block_id"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 78,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "78.00",
              "eval_cost": "15.60",
              "prefix_cost": "342.41",
              "data_read_per_join": "17K"
            },
            "used_columns": [
              "block_id",
              "type",
              "properties",
              "company_id",
              "storefront_id"
            ]
          }
        },
        {
          "table": {
            "table_name": "cscart_bm_blocks_descriptions",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "block_id",
              "lang_code"
            ],
            "key_length": "10",
            "ref": [
              "webmarco.cscart_bm_snapping.block_id",
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 78,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "78.00",
              "eval_cost": "15.60",
              "prefix_cost": "436.01",
              "data_read_per_join": "15K"
            },
            "used_columns": [
              "block_id",
              "lang_code",
              "name"
            ]
          }
        },
        {
          "table": {
            "table_name": "default_content",
            "access_type": "ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "block_id",
              "snapping_id",
              "lang_code",
              "object_id"
            ],
            "key_length": "18",
            "ref": [
              "webmarco.cscart_bm_snapping.block_id",
              "const",
              "webmarco.cscart_bm_blocks_descriptions.lang_code",
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 78,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "78.00",
              "eval_cost": "15.60",
              "prefix_cost": "529.61",
              "data_read_per_join": "17K"
            },
            "used_columns": [
              "snapping_id",
              "object_id",
              "object_type",
              "block_id",
              "lang_code",
              "content"
            ],
            "attached_condition": "<if>(is_not_null_compl(default_content), (`webmarco`.`default_content`.`object_type` like ''), true)"
          }
        },
        {
          "table": {
            "table_name": "dynamic_object_content",
            "access_type": "ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "block_id"
            ],
            "key_length": "4",
            "ref": [
              "webmarco.cscart_bm_snapping.block_id"
            ],
            "rows_examined_per_scan": 23,
            "rows_produced_per_join": 1800,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "79.88",
              "eval_cost": "360.07",
              "prefix_cost": "969.56",
              "data_read_per_join": "393K"
            },
            "used_columns": [
              "snapping_id",
              "object_id",
              "object_type",
              "block_id",
              "lang_code",
              "content"
            ],
            "attached_condition": "<if>(is_not_null_compl(dynamic_object_content), ((`webmarco`.`dynamic_object_content`.`object_id` = 0) and (`webmarco`.`dynamic_object_content`.`lang_code` = `webmarco`.`cscart_bm_blocks_descriptions`.`lang_code`) and (`webmarco`.`dynamic_object_content`.`object_type` like '')), true)"
          }
        }
      ]
    }
  }
}