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 (
    431129, 431338, 431423, 431439, 430656, 
    430947, 430993, 431051, 339782, 430722, 
    430723, 430778, 430816, 430856, 430984, 
    431074, 339718, 339675, 430688, 430702, 
    431005, 431165, 431247, 430627, 431007, 
    431027, 431184, 339604, 430720, 430742, 
    430805, 430839, 430878, 430933, 430994, 
    431022, 430991, 431177, 431357, 430917, 
    430990, 431019, 431108, 431264, 430826, 
    430889, 430918, 431275, 431297, 431426, 
    430690, 430791, 430840, 430872, 430940, 
    430652, 430790, 430835, 430897, 430977, 
    431342, 430674, 430804, 430828, 430886, 
    430979, 431220, 431358, 431501, 430958, 
    430960, 430968, 431138, 430871, 430931, 
    430952, 431006, 431345, 431428, 339597, 
    430780, 430786, 430969, 431288, 431467, 
    430715, 430770, 430894, 430953, 430972, 
    431336, 431451, 339846, 387050, 431037, 
    431262, 431395, 430666, 430692, 430726
  )

Query time 0.00115

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "430.18"
    },
    "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": 100,
          "rows_produced_per_join": 100,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "120.12",
            "eval_cost": "20.00",
            "prefix_cost": "140.12",
            "data_read_per_join": "1K"
          },
          "used_columns": [
            "product_id",
            "parent_product_id",
            "group_id"
          ],
          "attached_condition": "(`webmarco`.`p`.`product_id` in (431129,431338,431423,431439,430656,430947,430993,431051,339782,430722,430723,430778,430816,430856,430984,431074,339718,339675,430688,430702,431005,431165,431247,430627,431007,431027,431184,339604,430720,430742,430805,430839,430878,430933,430994,431022,430991,431177,431357,430917,430990,431019,431108,431264,430826,430889,430918,431275,431297,431426,430690,430791,430840,430872,430940,430652,430790,430835,430897,430977,431342,430674,430804,430828,430886,430979,431220,431358,431501,430958,430960,430968,431138,430871,430931,430952,431006,431345,431428,339597,430780,430786,430969,431288,431467,430715,430770,430894,430953,430972,431336,431451,339846,387050,431037,431262,431395,430666,430692,430726))"
        }
      },
      {
        "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": 100,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "100.00",
            "eval_cost": "20.00",
            "prefix_cost": "260.12",
            "data_read_per_join": "39K"
          },
          "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": 141,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "141.72",
            "eval_cost": "28.34",
            "prefix_cost": "430.18",
            "data_read_per_join": "14K"
          },
          "used_columns": [
            "feature_id",
            "purpose",
            "group_id"
          ]
        }
      }
    ]
  }
}