SELECT 
  lang_code, 
  name, 
  status, 
  country_code 
FROM 
  cscart_languages 
WHERE 
  status = 'A'

Query time 0.00019

JSON explain

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