SELECT 
  cscart_shippings.shipping_id, 
  cscart_shipping_descriptions.shipping, 
  cscart_shipping_descriptions.delivery_time, 
  cscart_shipping_descriptions.description, 
  cscart_shippings.rate_calculation, 
  cscart_shippings.service_params, 
  cscart_shippings.destination, 
  cscart_shippings.min_weight, 
  cscart_shippings.max_weight, 
  cscart_shippings.service_id, 
  cscart_shippings.free_shipping, 
  cscart_shipping_services.module, 
  cscart_shipping_services.code as service_code, 
  cscart_shippings.is_address_required 
FROM 
  cscart_shippings 
  LEFT JOIN cscart_shipping_descriptions ON cscart_shippings.shipping_id = cscart_shipping_descriptions.shipping_id 
  LEFT JOIN cscart_shipping_services ON cscart_shipping_services.service_id = cscart_shippings.service_id 
  LEFT JOIN cscart_storefronts_shippings AS storefronts_shippings ON storefronts_shippings.shipping_id = cscart_shippings.shipping_id 
WHERE 
  cscart_shippings.status = 'A' 
  AND cscart_shippings.shipping_id IN (159, 44, 49) 
  AND (
    cscart_shippings.min_weight <= 0.001 
    AND (
      cscart_shippings.max_weight >= 0.001 
      OR cscart_shippings.max_weight = 0.00
    )
  ) 
  AND cscart_shipping_descriptions.lang_code = 'en' 
  AND (
    cscart_shippings.usergroup_ids = '' 
    OR FIND_IN_SET(
      0, cscart_shippings.usergroup_ids
    ) 
    OR FIND_IN_SET(
      1, cscart_shippings.usergroup_ids
    )
  ) 
  AND (
    storefronts_shippings.storefront_id = 1 
    OR storefronts_shippings.storefront_id IS NULL
  ) 
ORDER BY 
  cscart_shippings.position

Query time 0.00280

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "7.57"
    },
    "ordering_operation": {
      "using_temporary_table": true,
      "using_filesort": true,
      "cost_info": {
        "sort_cost": "0.13"
      },
      "nested_loop": [
        {
          "table": {
            "table_name": "cscart_shippings",
            "access_type": "range",
            "possible_keys": [
              "shipping_id",
              "c_status"
            ],
            "key": "shipping_id",
            "used_key_parts": [
              "shipping_id"
            ],
            "key_length": "3",
            "rows_examined_per_scan": 3,
            "rows_produced_per_join": 0,
            "filtered": "1.67",
            "cost_info": {
              "read_cost": "4.21",
              "eval_cost": "0.01",
              "prefix_cost": "4.22",
              "data_read_per_join": "118"
            },
            "used_columns": [
              "shipping_id",
              "destination",
              "min_weight",
              "max_weight",
              "usergroup_ids",
              "rate_calculation",
              "service_id",
              "service_params",
              "position",
              "status",
              "free_shipping",
              "is_address_required"
            ],
            "attached_condition": "((`webmarco`.`cscart_shippings`.`status` = 'A') and (`webmarco`.`cscart_shippings`.`shipping_id` in (159,44,49)) and (`webmarco`.`cscart_shippings`.`min_weight` <= 0.001) and ((`webmarco`.`cscart_shippings`.`max_weight` >= 0.001) or (`webmarco`.`cscart_shippings`.`max_weight` = 0.00)) and ((`webmarco`.`cscart_shippings`.`usergroup_ids` = '') or find_in_set(0,`webmarco`.`cscart_shippings`.`usergroup_ids`) or find_in_set(1,`webmarco`.`cscart_shippings`.`usergroup_ids`)))"
          }
        },
        {
          "table": {
            "table_name": "cscart_shipping_descriptions",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "shipping_id",
              "lang_code"
            ],
            "key_length": "9",
            "ref": [
              "webmarco.cscart_shippings.shipping_id",
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 0,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "0.05",
              "eval_cost": "0.01",
              "prefix_cost": "4.28",
              "data_read_per_join": "49"
            },
            "used_columns": [
              "shipping_id",
              "lang_code",
              "shipping",
              "delivery_time",
              "description"
            ]
          }
        },
        {
          "table": {
            "table_name": "cscart_shipping_services",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY",
              "sa"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "service_id"
            ],
            "key_length": "3",
            "ref": [
              "webmarco.cscart_shippings.service_id"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 0,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "0.05",
              "eval_cost": "0.01",
              "prefix_cost": "4.34",
              "data_read_per_join": "20"
            },
            "used_columns": [
              "service_id",
              "module",
              "code"
            ]
          }
        },
        {
          "table": {
            "table_name": "storefronts_shippings",
            "access_type": "index",
            "key": "idx_storefront_id",
            "used_key_parts": [
              "storefront_id"
            ],
            "key_length": "4",
            "rows_examined_per_scan": 13,
            "rows_produced_per_join": 0,
            "filtered": "20.00",
            "using_index": true,
            "using_join_buffer": "Block Nested Loop",
            "cost_info": {
              "read_cost": "3.08",
              "eval_cost": "0.03",
              "prefix_cost": "7.45",
              "data_read_per_join": "2"
            },
            "used_columns": [
              "storefront_id",
              "shipping_id"
            ],
            "attached_condition": "(<if>(found_match(storefronts_shippings), ((`webmarco`.`storefronts_shippings`.`storefront_id` = 1) or isnull(`webmarco`.`storefronts_shippings`.`storefront_id`)), true) and <if>(is_not_null_compl(storefronts_shippings), (`webmarco`.`storefronts_shippings`.`shipping_id` = `webmarco`.`cscart_shippings`.`shipping_id`), true))"
          }
        }
      ]
    }
  }
}