UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'N6erNRRwkdArD19Irxr2QUdox846Ysm+CImZDx061Eo=' 
WHERE 
  key_id = '1f1ebc79963a9d1839848e5b4e688bcb324d33fae55da907e64d00ff17df899c' 
  AND (
    token = 'N6erNRRwkdArD19Irxr2QUdox846Ysm+CImZDx061Eo=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )