Going by what Adobe does, since that's what I'm used to. Since once one or more objects are locked, you can no longer select them, you need to have an "unlock all" presumably. Or maybe "unlock all on current layer"...
Rabulias said:
This suggestions incorporates some nice functionality, even if it were to be menu driven and not done by shortcut keys.
One nitpick, though: once you lock a token, the only way to unlock it is to unlock all tokens? I would suggest some way to select a locked token (maybe double-clicking or shift-clicking?) and then another command to unlock that token.