Nope. It is closer to cyanide poisoning than to SN. Don't be fooled by the fact that they both start with sodium. Sodium is one of the whores of the chemical world - it bonds with anything.
And it's gonna hurt, full stop.
There is also a danger to first responders if they try to revive you by mouth-to-mouth. The hydrazoic acid created in your system can be inhaled by your rescuer and cause them to be poisoned. Wear a sign around your neck.
Most of literature gives time to death estimates at more than an hour - some several days - although loss of consciousness happens sooner.
Ironically, nitrates , including SN, can be given as an antidote to Sodium Azide poisoning. They do not usually work.
The worry is that people do occasionally survive, but often with neurological damage. Most of the few who survive were exposed to the chemical in a lab or factory setting over a period of time, This is one chemical where taking enough and taking it quickly is imperative.
(Edited for clarity.)