UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'KhiU5zBDsWkaVLqh9EPMDIn7Eq8Ewxy0E+1j7SKkEHs=' 
WHERE 
  key_id = 'b5ac7a97e9bb0fb1f588a90fa157e7a9776c67240f9db9acec8cc13a27b8c762' 
  AND (
    token = 'KhiU5zBDsWkaVLqh9EPMDIn7Eq8Ewxy0E+1j7SKkEHs=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )