UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'W68bP7sTgSj93NweAD5b829mavg/3KBkDhaveOj2TaI=' 
WHERE 
  key_id = 'fef19982a3fdf44bf811c71e30c0d150b0d69531920eb2e3a857ce7af56bd5af' 
  AND (
    token = 'W68bP7sTgSj93NweAD5b829mavg/3KBkDhaveOj2TaI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )