SELECT 
  cfv.category_filter_value_id, 
  cfv.parent_id, 
  cfv.parent_name, 
  cfv.order, 
  cfvd.title, 
  cfv.hint, 
  cfv.is_any, 
  cfvd.lang_code 
FROM 
  cscart_category_filter_values AS cfv 
  LEFT JOIN cscart_category_filter_value_descriptions AS cfvd ON cfv.category_filter_value_id = cfvd.category_filter_value_id 
  AND cfvd.lang_code = 'en' 
WHERE 
  1 
  AND cfv.parent_id IN (7) 
  AND cfv.parent_name IN ('filter_values_set') 
ORDER BY 
  cfv.order ASC

Query time 0.00161

JSON explain

{
  "query_block": {
    "select_id": 1,
    "read_sorted_file": {
      "filesort": {
        "sort_key": "cfv.`order`",
        "table": {
          "table_name": "cfv",
          "access_type": "ALL",
          "rows": 1025,
          "filtered": 100,
          "attached_condition": "cfv.parent_id = 7 and cfv.parent_name = 'filter_values_set'"
        }
      }
    },
    "table": {
      "table_name": "cfvd",
      "access_type": "eq_ref",
      "possible_keys": ["PRIMARY"],
      "key": "PRIMARY",
      "key_length": "10",
      "used_key_parts": ["category_filter_value_id", "lang_code"],
      "ref": ["dev.cfv.category_filter_value_id", "const"],
      "rows": 1,
      "filtered": 100,
      "attached_condition": "trigcond(cfvd.lang_code = 'en')"
    }
  }
}

Result

category_filter_value_id parent_id parent_name order title hint is_any lang_code
424 7 filter_values_set 0 (AP) Delos N en
425 7 filter_values_set 0 (AP) Sutekh N en
426 7 filter_values_set 0 (EU) Aaru N en
427 7 filter_values_set 0 (EU) Abaton N en
428 7 filter_values_set 0 (EU) Artemis N en
429 7 filter_values_set 0 (EU) Asgard N en
430 7 filter_values_set 0 (EU) Barri N en
431 7 filter_values_set 0 (EU) Cleopatra N en
432 7 filter_values_set 0 (EU) Crassus N en
433 7 filter_values_set 0 (EU) Kronos N en
434 7 filter_values_set 0 (EU) Nysa N en
435 7 filter_values_set 0 (EU) Nyx N en
436 7 filter_values_set 0 (SA) Artorius N en
437 7 filter_values_set 0 (SA) Devaloka N en
438 7 filter_values_set 0 (SA) Gaea N en
439 7 filter_values_set 0 (US East) Amarah N en
440 7 filter_values_set 0 (US East) Castle of Steel N en
441 7 filter_values_set 0 (US East) Lilith N en
442 7 filter_values_set 0 (US East) Maramma N en
443 7 filter_values_set 0 (US East) Orofena N en
444 7 filter_values_set 0 (US East) Seer N en
445 7 filter_values_set 0 (US East) Valhalla N en
446 7 filter_values_set 0 (US West) El Dorado N en
447 7 filter_values_set 0 (US West) Isabella N en