UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'dZI4HWwIjcabuTFxICqfVDnohIDRaxgjNnbUiGA+QB4=' 
WHERE 
  key_id = 'd9f4815199b108d7d45f865d50c4432e79baa41797048a361e161f042d8c3286' 
  AND (
    token = 'dZI4HWwIjcabuTFxICqfVDnohIDRaxgjNnbUiGA+QB4=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )