I was offered the official Nissan Security+, which is apparently the only one offered on the car since it's so new. That might depend on what the dealer wants to sell. The top one is Gold plan with $100 deductible. There are different months and miles you can choose, with 8 years and 120k miles being the longest.
Click vehicle service contracts.
www.nissanusa.com
As far as I can tell, you can order it from any Nissan dealer within the existing warranty period, however the lower the miles the better as there seems to be some kind of fee if you get it after 10-12k miles.
Click vehicle service contracts.

Nissan Vehicle Extended Protection Plans | Nissan USA
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As far as I can tell, you can order it from any Nissan dealer within the existing warranty period, however the lower the miles the better as there seems to be some kind of fee if you get it after 10-12k miles.