Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '566f11f2fbb68d12b9c0e4e5e28760caad0ed24e1d8ac3cb897cf04894a3a093' 
  AND token = 'yMqqKlJk5twsup49ywif2rc2BkPwurLunnYIgWZrzbA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00055

JSON explain

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