UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'GUa/JlVOiTaKNtV3tXBnNffkENdkufOW6seF8Sayug0=' 
WHERE 
  key_id = '2a8ac61eb14dbaebd4860ba8323aae160836883adeda8b46dbea94c5b84d7593' 
  AND (
    token = 'GUa/JlVOiTaKNtV3tXBnNffkENdkufOW6seF8Sayug0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )