UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'NlM4Co9E08ESvBQXXAqx9aWvWU9NhoF4U/QWGAUv/CM=' 
WHERE 
  key_id = '817ffce43ef10aa295e065b59018492b9f3425af55b7cfa1d0bd9a6a335b5362' 
  AND (
    token = 'NlM4Co9E08ESvBQXXAqx9aWvWU9NhoF4U/QWGAUv/CM=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )