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 (
    262462, 220026, 220035, 220028, 220016, 
    220024, 220020, 309477, 309473, 309471, 
    309474, 309478, 309476, 309469, 309470, 
    309475, 309472, 427782, 159862, 286468, 
    286472, 286478, 286465, 286467, 286475, 
    286479, 286473, 286469, 286466, 286470, 
    286471, 286474, 285940, 285937, 285942, 
    286476, 285945, 285939, 285938, 285943, 
    285941, 285946, 285966, 285970, 285968, 
    285971, 285967, 285969, 159865, 173787, 
    159861, 159863, 159864, 173789, 173763
  )

Query time 0.00263

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "236.54"
    },
    "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": 55,
          "rows_produced_per_join": 55,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "66.07",
            "eval_cost": "11.00",
            "prefix_cost": "77.07",
            "data_read_per_join": "880"
          },
          "used_columns": [
            "product_id",
            "parent_product_id",
            "group_id"
          ],
          "attached_condition": "(`webmarco`.`p`.`product_id` in (262462,220026,220035,220028,220016,220024,220020,309477,309473,309471,309474,309478,309476,309469,309470,309475,309472,427782,159862,286468,286472,286478,286465,286467,286475,286479,286473,286469,286466,286470,286471,286474,285940,285937,285942,286476,285945,285939,285938,285943,285941,285946,285966,285970,285968,285971,285967,285969,159865,173787,159861,159863,159864,173789,173763))"
        }
      },
      {
        "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": 55,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "55.00",
            "eval_cost": "11.00",
            "prefix_cost": "143.07",
            "data_read_per_join": "21K"
          },
          "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": 77,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "77.89",
            "eval_cost": "15.58",
            "prefix_cost": "236.54",
            "data_read_per_join": "7K"
          },
          "used_columns": [
            "feature_id",
            "purpose",
            "group_id"
          ]
        }
      }
    ]
  }
}