UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'a2+QClT3Z6Zto5ixa8IoBmqU6kzeOMYcMZICWKKtCoE=' 
WHERE 
  key_id = 'a81b87609d2517d9b057b6f668c54985b59784eb0880cbca720551227791c24c' 
  AND (
    token = 'a2+QClT3Z6Zto5ixa8IoBmqU6kzeOMYcMZICWKKtCoE=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )