SELECT 
  pfv.feature_id, 
  pfv.product_id, 
  pfv.variant_id, 
  fv.position, 
  fvd.variant 
FROM 
  cscart_product_features_values AS pfv 
  INNER JOIN cscart_product_feature_variants AS fv ON pfv.feature_id = fv.feature_id 
  AND pfv.variant_id = fv.variant_id 
  INNER JOIN cscart_product_feature_variant_descriptions AS fvd ON pfv.variant_id = fvd.variant_id 
  AND fvd.lang_code = 'vi' 
WHERE 
  pfv.feature_id IN (
    24191, 21738, 21739, 20214, 20210, 20212, 
    20948, 24225, 20213, 20211, 24230, 
    21425, 20206, 24226, 20207, 20208, 
    24229, 20951, 20209, 20949, 24228
  ) 
  AND pfv.product_id IN (
    41130, 1306, 1305, 4785, 4795, 37881, 
    41124, 4789, 20830, 41423, 4787, 41134, 
    4793, 41102, 41428, 1840, 4803, 41424, 
    41138, 4801, 4799, 41427, 2625, 4797, 
    20838, 41426, 37895
  ) 
  AND pfv.lang_code = 'vi'

Query time 0.06953

JSON explain

{
  "query_block": {
    "select_id": 1,
    "nested_loop": [
      {
        "table": {
          "table_name": "pfv",
          "access_type": "range",
          "possible_keys": [
            "PRIMARY",
            "fl",
            "variant_id",
            "lang_code",
            "product_id",
            "fpl",
            "idx_product_feature_variant_id"
          ],
          "key": "product_id",
          "key_length": "3",
          "used_key_parts": ["product_id"],
          "rowid_filter": {
            "range": {
              "key": "fl",
              "used_key_parts": ["feature_id", "lang_code"]
            },
            "rows": 403,
            "selectivity_pct": 0.254966468
          },
          "rows": 152,
          "filtered": 0.254966468,
          "index_condition": "pfv.product_id in (41130,1306,1305,4785,4795,37881,41124,4789,20830,41423,4787,41134,4793,41102,41428,1840,4803,41424,41138,4801,4799,41427,2625,4797,20838,41426,37895)",
          "attached_condition": "pfv.feature_id in (24191,21738,21739,20214,20210,20212,20948,24225,20213,20211,24230,21425,20206,24226,20207,20208,24229,20951,20209,20949,24228) and pfv.lang_code = 'vi'"
        }
      },
      {
        "table": {
          "table_name": "fv",
          "access_type": "eq_ref",
          "possible_keys": ["PRIMARY", "feature_id"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["variant_id"],
          "ref": ["dev_db.pfv.variant_id"],
          "rows": 1,
          "filtered": 100,
          "attached_condition": "fv.feature_id = pfv.feature_id"
        }
      },
      {
        "table": {
          "table_name": "fvd",
          "access_type": "eq_ref",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "9",
          "used_key_parts": ["variant_id", "lang_code"],
          "ref": ["dev_db.pfv.variant_id", "const"],
          "rows": 1,
          "filtered": 100,
          "index_condition": "fvd.lang_code = 'vi'"
        }
      }
    ]
  }
}