Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c4a6c5381bfac3c32560d5038c1b43af69b7778d4360973f629ea1bdab843899' 
  AND token = 'y6sJXypzS0DBtVl2BJ1E71TByoodXkWY92XoGJFpGzA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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