ok, so you need to add this `Item`.

    Item[KeyEvent["t", Modifiers -> {Control}],
      FrontEndExecute[
          FrontEnd`NotebookApply[FrontEnd`InputNotebook[], 
                                 RowBox[{"foo", "[", "\[SelectionPlaceholder]", "]"}]];
          FrontEnd`SelectionMove[FrontEnd`InputNotebook[], All, Expression, 2];
          FrontEnd`SelectionEvaluate[FrontEnd`InputNotebook[]]
                     ]
        ]

###Usage

>![enter image description here][1]

Select what you need

>![enter image description here][2]

Use <kbd>Ctrl</kbd>+<kbd>t</kbd>

>![enter image description here][3]

###Ref:

Here is a tutorial how to add a new shortcut: [Automating Esc \[\[ Esc formatting?](http://mathematica.stackexchange.com/q/5212/5478)


  [1]: https://i.sstatic.net/nJ69h.png
  [2]: https://i.sstatic.net/6Bzsi.png
  [3]: https://i.sstatic.net/SPP2s.png