UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'lCiSRUdHI5Vs1na0DafdX86SYee/xOiB6EZdYrpW8+o=' 
WHERE 
  key_id = '39825fdc4c94844df1c218265f01b63f91588f39bbd6329503f662a067539902' 
  AND (
    token = 'lCiSRUdHI5Vs1na0DafdX86SYee/xOiB6EZdYrpW8+o=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )