[sqlite] How to escape a literal _ in a query using the LIKE operator

[Markus Gritsch]

Hi!
Say I want to match 'barfoo' and 'bazfoo', I can use
  LIKE 'ba_foo'
If I want to match 'barfoo_png' and 'bazfoo_png', but not 'barfooxpng', 
I have to escape the underscore before png.  I tried
  LIKE 'ba_foo\_png'
but this does not seem to work.

Is there a proper solution?
Markus