UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'iGUXkIsi4bCAXladT08r7UyTVcgoOuYtVv8RMFcXAtA=' 
WHERE 
  key_id = '51c94e7343d7f1d8049fc8dd637d8ae7e5295257de18e588bbb62a57ce1f433f' 
  AND (
    token = 'iGUXkIsi4bCAXladT08r7UyTVcgoOuYtVv8RMFcXAtA=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )