UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'PuIVxmeF3MoNIE7XRchYuo2nmrYQVaoj09dLWHUpCgs=' 
WHERE 
  key_id = 'fc520b735f18ca2619c0b88c62c540601959a6167ca522add9815d5b06466d76' 
  AND (
    token = 'PuIVxmeF3MoNIE7XRchYuo2nmrYQVaoj09dLWHUpCgs=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )