UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'PG2S4Za5uC6lfzkWn1ju/hY8Gvu6d4hsRZqcY0rDXSY=' 
WHERE 
  key_id = 'ec95c334531b196ca9a9b181bf5e6a4714016c0259b50910942bd5c5078cd5d5' 
  AND (
    token = 'PG2S4Za5uC6lfzkWn1ju/hY8Gvu6d4hsRZqcY0rDXSY=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )