UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Hu0Bdt0emDDmoEYD4c8fpGPd8JlqIGAmiW6Mw2MpgpQ=' 
WHERE 
  key_id = '3ad639b1e23e3338974f30c4f04c57a3cf28358c1949b168d390d2793a101097' 
  AND (
    token = 'Hu0Bdt0emDDmoEYD4c8fpGPd8JlqIGAmiW6Mw2MpgpQ=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )