No. Timing belt. Not chain.
I recently replaced the timing chain on my 1994 Toyota pick-up. That cost me ~$800 parts/labor.
It comes with a chain.
4 cylinder Toyota Tacoma's have a timing chain. The V6 has a belt.
chain
The 1.8 liter 4 cylinder engine in a 2000 Toyota Celica has a timing CHAIN
timing belt
It has a timing belt.
belt
1998 and up 4 cylinders have timing chains not belts, which means it is not necessary to replace.
It has a timing chain that should last the life of the engine.
The 2.2 liter four cylinder engine in a 2000 Toyota Camry has a timing BELT
Your 2000 Toyota Celica has a chain and not a belt. The chain requires no maintenance.