Hi Nikita, sorry no there isn't quite a way to use 1,2,3 as a replacement view modifier key.
It's possible to run a script using 1 as a shortcut key but it's not quite the same thing.

But you don't actually need to hold down any of Shift, Alt, Ctrl for view manipulation.
You can use these which don't require any key to be held down at all:

Right drag in 3D view = Rotate
Middle button drag in 3D view = Pan
Turn scroll wheel = Zoom

- Michael