UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'aG6J0yh8bm2tvWYhjCY4HQP6OcL5YKjqZYtuaWUtKSI=' 
WHERE 
  key_id = 'c21b11fe92cd7a0ce68a8971b2b103a157f583aacf31efa323924cdc6f642377' 
  AND (
    token = 'aG6J0yh8bm2tvWYhjCY4HQP6OcL5YKjqZYtuaWUtKSI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )