SELECT 
  pf.feature_id, 
  pf.company_id, 
  pf.feature_type, 
  pf.parent_id, 
  pf.display_on_product, 
  pf.display_on_catalog, 
  pf.display_on_header, 
  pf.categories_path, 
  pf.status, 
  pf.comparison, 
  pf.position, 
  pf.purpose, 
  pf.feature_style, 
  pf.filter_style, 
  pf.feature_code, 
  pfd.description, 
  pfd.lang_code, 
  pfd.prefix, 
  pfd.suffix, 
  pfd.full_description, 
  pfv.value, 
  pfv.variant_id, 
  pfv.value_int, 
  pfv.product_id 
FROM 
  cscart_product_features_values AS pfv 
  LEFT JOIN cscart_product_features AS pf ON pfv.feature_id = pf.feature_id 
  LEFT JOIN cscart_product_features_descriptions AS pfd ON pfd.feature_id = pf.feature_id 
  AND pfd.lang_code = 'vi' 
WHERE 
  1 = 1 
  AND pfv.product_id IN (
    35732, 35855, 35856, 35857, 35858, 35859, 
    35860, 35861, 35862, 35863, 35864, 
    35865, 35866, 35867, 35868, 35869, 
    35870, 35871, 35872, 35873, 35874, 
    35875, 35876, 35877, 35878
  ) 
  AND pfv.lang_code = 'vi' 
  AND pf.feature_code IN ('Brand', 'ISBN', 'GTIN', 'MPN')

Query time 0.00327

JSON explain

{
  "query_block": {
    "select_id": 1,
    "nested_loop": [
      {
        "table": {
          "table_name": "pfv",
          "access_type": "range",
          "possible_keys": [
            "PRIMARY",
            "fl",
            "lang_code",
            "product_id",
            "fpl",
            "idx_product_feature_variant_id"
          ],
          "key": "idx_product_feature_variant_id",
          "key_length": "3",
          "used_key_parts": ["product_id"],
          "rows": 125,
          "filtered": 51.52882767,
          "index_condition": "pfv.product_id in (35732,35855,35856,35857,35858,35859,35860,35861,35862,35863,35864,35865,35866,35867,35868,35869,35870,35871,35872,35873,35874,35875,35876,35877,35878) and pfv.lang_code = 'vi'"
        }
      },
      {
        "table": {
          "table_name": "pf",
          "access_type": "eq_ref",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["feature_id"],
          "ref": ["dev_db.pfv.feature_id"],
          "rows": 1,
          "filtered": 100,
          "attached_condition": "pf.feature_code in ('Brand','ISBN','GTIN','MPN')"
        }
      },
      {
        "table": {
          "table_name": "pfd",
          "access_type": "eq_ref",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "9",
          "used_key_parts": ["feature_id", "lang_code"],
          "ref": ["dev_db.pfv.feature_id", "const"],
          "rows": 1,
          "filtered": 100,
          "attached_condition": "trigcond(pfd.lang_code = 'vi')"
        }
      }
    ]
  }
}