How do get them?
I have looked about no clear answer 
Edited incorrect info
More info can be found on the old forums.
http://forums-archive.ageofconan.com/showthread.php?188556-Gilding-Tokens
Gilding tokens can be obtained through the item shop, every hoard gives you two gilding tokens.
Iām not aware of any gilding tokens being awarded for world bosses but I might be out of the loop as I have not done a world boss in so long.
You also get them from daily login reward caches as well as rewards themself (but very rare).
you can also get a few with the ānormalā daily login rewards and randomly from the Exemplarās or Paragonās Caches.
The nonrepeatable versions of the Halloween quests also give you a few gilding tokens, IIRC.
yes you are right.
Correct. World bosses do not give gilding tokens.