SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bc56bd68b93e1dd1b0dc7ab026c1d09159ec47761f803175e6ad512bf4110df9' 
  AND token = 'hUIMgPxSXvhV25ialZLqbSYPA6j85Ksizaix6hUZu+s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}