@alfredpleb alas!, no. Based on the answer of @deanishe this may not be possible, so I moved on. Luckily, there is a search facility in notes itself...
Is it possible to set the search to include individual notes of the default Mac Notes application? Or is it a PowerPack feature (I use the free version now, but I am considering the PowerPack)? Something that Siri does, but I do not feel like moving over to Siri, I am way too much used to Alfred by now (and like it..:-).