As of the latest versions of Quick Shulker (1.3.9-1.19) and of Tokenable Furnaces (2.0.2-1.19.2), tokened shulker boxes cannot be opened with the Quick Shulker methods (listed below), only the vanilla way.

Quick Shulker opening:
1) Pressing a keybind while holding the item
2) Right clicking while holding the item
3) Pressing the keybind while hovering over the item in your inventory
4) Right clicking the item while hovering over in your inventory