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 (
    14096, 14108, 14094, 14047, 14082, 14058, 
    14107, 14081, 14115, 14114, 14113, 
    14046, 14104, 14074, 14662, 14073, 
    14072, 14099, 14098, 14071, 14133, 
    14106, 14070, 14045
  )

Query time 0.00037

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost": 0.09366448,
    "nested_loop": [
      {
        "table": {
          "table_name": "p",
          "access_type": "range",
          "possible_keys": ["PRIMARY", "idx_group_id"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["product_id"],
          "loops": 1,
          "rows": 24,
          "cost": 0.02605648,
          "filtered": 100,
          "attached_condition": "p.product_id in (14096,14108,14094,14047,14082,14058,14107,14081,14115,14114,14113,14046,14104,14074,14662,14073,14072,14099,14098,14071,14133,14106,14070,14045)"
        }
      },
      {
        "table": {
          "table_name": "f",
          "access_type": "ref",
          "possible_keys": ["idx_group_id"],
          "key": "idx_group_id",
          "key_length": "3",
          "used_key_parts": ["group_id"],
          "ref": ["u508912950_dev_2025.p.group_id"],
          "loops": 24,
          "rows": 1,
          "cost": 0.04532224,
          "filtered": 100
        }
      },
      {
        "table": {
          "table_name": "g",
          "access_type": "eq_ref",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["id"],
          "ref": ["u508912950_dev_2025.p.group_id"],
          "loops": 24,
          "rows": 1,
          "cost": 0.02228576,
          "filtered": 100
        }
      }
    ]
  }
}