Just use forward-sexp instead (bound to C-M-f). Likewise, backward-sexp (C-M-b).
See (elisp) List Motion.
If you don't want to do that then you'll need to change the syntax for character * in your buffer to be word syntax:
(modify-syntax-entry ?* "w")
Or for a given syntax table, my-table:
(modify-syntax-entry ?* "w" my-table)