SELECT 
  f.feature_id, 
  f.purpose, 
  p.product_id, 
  p.parent_product_id, 
  g.id, 
  g.code 
FROM 
  cscart_product_variation_group_features AS f 
  INNER JOIN cscart_product_variation_groups AS g ON f.group_id = g.id 
  INNER JOIN cscart_product_variation_group_products AS p ON f.group_id = p.group_id 
WHERE 
  p.product_id IN (
    262454, 271489, 271497, 271493, 271504, 
    271500, 271506, 271496, 271492, 271498, 
    224456, 271510, 271503, 271494, 271490, 
    271502, 271505, 271509, 271508, 271499, 
    271507, 271501, 224454, 254325, 435505, 
    381725, 432250
  )

Query time 0.00164

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "116.16"
    },
    "nested_loop": [
      {
        "table": {
          "table_name": "p",
          "access_type": "range",
          "possible_keys": [
            "PRIMARY",
            "idx_group_id"
          ],
          "key": "PRIMARY",
          "used_key_parts": [
            "product_id"
          ],
          "key_length": "3",
          "rows_examined_per_scan": 27,
          "rows_produced_per_join": 27,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "32.44",
            "eval_cost": "5.40",
            "prefix_cost": "37.84",
            "data_read_per_join": "432"
          },
          "used_columns": [
            "product_id",
            "parent_product_id",
            "group_id"
          ],
          "attached_condition": "(`webmarco`.`p`.`product_id` in (262454,271489,271497,271493,271504,271500,271506,271496,271492,271498,224456,271510,271503,271494,271490,271502,271505,271509,271508,271499,271507,271501,224454,254325,435505,381725,432250))"
        }
      },
      {
        "table": {
          "table_name": "g",
          "access_type": "eq_ref",
          "possible_keys": [
            "PRIMARY"
          ],
          "key": "PRIMARY",
          "used_key_parts": [
            "id"
          ],
          "key_length": "3",
          "ref": [
            "webmarco.p.group_id"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 27,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "27.00",
            "eval_cost": "5.40",
            "prefix_cost": "70.24",
            "data_read_per_join": "10K"
          },
          "used_columns": [
            "id",
            "code"
          ]
        }
      },
      {
        "table": {
          "table_name": "f",
          "access_type": "ref",
          "possible_keys": [
            "idx_group_id"
          ],
          "key": "idx_group_id",
          "used_key_parts": [
            "group_id"
          ],
          "key_length": "3",
          "ref": [
            "webmarco.p.group_id"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 38,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "38.26",
            "eval_cost": "7.65",
            "prefix_cost": "116.16",
            "data_read_per_join": "3K"
          },
          "used_columns": [
            "feature_id",
            "purpose",
            "group_id"
          ]
        }
      }
    ]
  }
}