From the recent update, each player gets awarded an extra 40 tokens on top of the usual 20 for each dungeon route he takes in a day (doing three times the same dungeon with the three different routes will give you 180 tokens).
However, update had bugs. Some players were considered to exploit the dungeon and get rewarded only 15 tokens for their first dungeon (then 6), and others only 30. (Behaviour has been corrected since the 2nd of October)
There have been rumors that these players would get their tokens back in a future update, but only if they have reported the bug (these are rumors). It is recommended to send bug reports when this happens and you are still in the dungeon (type "/bug" in the chat).
I personally only receive 15 tokens on my first dungeon and report the bug each time, in case the update would give me the missing one back.