UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'nVp4Xw3cUld+sSwq3yW6mWTjcApuLXbm250lnWAo0NY=' 
WHERE 
  key_id = '9d9899ee88d8d1d91c388884800a57b98257d883ea776cd527c5f615b725f9f4' 
  AND (
    token = 'nVp4Xw3cUld+sSwq3yW6mWTjcApuLXbm250lnWAo0NY=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )