No lighted lock buttons, I'm afraid. There are a couple of topics here on adding a light, or something similar. I'll have a look...
I did some searching, and there is a solution for the 2013-2017 Leaf that will PROBABLY work for the 2018 as well. You need this switch unit:
13 14 15 16 Nissan Altima Driver Window Switch OEM P/N 254013TA5A - from poster "Goldbrick"
The "Altima" is correct - the Leaf just doesn't come with a lighted switch unit.