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 (
    431070, 431433, 431397, 431370, 430783, 
    430775, 431432, 431286, 431306, 431490, 
    431268, 431493, 431398, 431444, 431386, 
    431305, 430763, 431255, 430967, 431254, 
    431399, 431484, 435512, 430776, 430784, 
    431016, 431173, 431216, 431318, 431417, 
    431371, 431416, 435513, 430729, 431272, 
    431319, 431372, 431461, 431373, 431271, 
    435515, 435514, 431267, 431269, 435516, 
    431270, 387051, 435517, 435518, 432250
  )

Query time 0.00085

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "215.10"
    },
    "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": 50,
          "rows_produced_per_join": 50,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "60.06",
            "eval_cost": "10.00",
            "prefix_cost": "70.06",
            "data_read_per_join": "800"
          },
          "used_columns": [
            "product_id",
            "parent_product_id",
            "group_id"
          ],
          "attached_condition": "(`webmarco`.`p`.`product_id` in (431070,431433,431397,431370,430783,430775,431432,431286,431306,431490,431268,431493,431398,431444,431386,431305,430763,431255,430967,431254,431399,431484,435512,430776,430784,431016,431173,431216,431318,431417,431371,431416,435513,430729,431272,431319,431372,431461,431373,431271,435515,435514,431267,431269,435516,431270,387051,435517,435518,432250))"
        }
      },
      {
        "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": 50,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "50.00",
            "eval_cost": "10.00",
            "prefix_cost": "130.06",
            "data_read_per_join": "19K"
          },
          "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": 70,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "70.86",
            "eval_cost": "14.17",
            "prefix_cost": "215.10",
            "data_read_per_join": "7K"
          },
          "used_columns": [
            "feature_id",
            "purpose",
            "group_id"
          ]
        }
      }
    ]
  }
}