UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'aKpRHbCbcnDvTim13RhVdoFzInjB/91IejNMkf4eoj0=' 
WHERE 
  key_id = '4aada5d5ab4e02846d805a3fd03de00b62143641704abf2b85ac0dc15290e509' 
  AND (
    token = 'aKpRHbCbcnDvTim13RhVdoFzInjB/91IejNMkf4eoj0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )