UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'ievUk6doaDi1NuBYJ144cU4S/FX6uVK95mPkMxWDA7c=' 
WHERE 
  key_id = '1eb794cec00464e3508637924eb3a298a71db4c8d743c5926492cce87880c959' 
  AND (
    token = 'ievUk6doaDi1NuBYJ144cU4S/FX6uVK95mPkMxWDA7c=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )