$.get('url', {
  username: 'Luiz'
  password: 'Pass'
})
  .done(function () {
    console.log('Enviado!');
  })
  .fail(function () {
    console.log('Erro no envio.');
  })
;

$.ajax({
  url: "http://meuapp.com/jwt",
  dataType: 'jsonp',
  success: function(data, status) {
    return console.log("Dados", data);
  },
  beforeSend: function(xhr, settings) { xhr.setRequestHeader('Authorization','Bearer ' + token); }
});