SELECT 
  * 
FROM 
  cscart_languages 
WHERE 
  status = 'A'

Query time 0.00020

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_languages",
      "access_type": "system",
      "rows": 1,
      "filtered": 100
    }
  }
}

Result

lang_id lang_code name status country_code
1 ru Русский A RU