UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'ljqwDJ0Sdbe+vqpAX6Uj6vdHfcyPIDHU4P8dj1yEYXk=' 
WHERE 
  key_id = '8516beb5a37bdd1f85207e9e4bbbd5f53cee5ba0b8c8bfa2ab1457d0752d2c5d' 
  AND (
    token = 'ljqwDJ0Sdbe+vqpAX6Uj6vdHfcyPIDHU4P8dj1yEYXk=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )