Fabiola Garcia said they pointed a gun at her head and demanded cash from the register.
"They told me, 'Give me all the money or I'll kill you,' and a lot of things, so I gave them the money," Garcia said.
The men made off with about $900.
There were two customers inside the restaurant at the time of the robbery, but no one was hurt.
Anyone with information is urged to call the L.A. County Sheriff's Lakewood station at (562) 623-3500.