The expression is "peachy keen." I don't know where Nanren888 got that passage. It is horrible English, but I recognize the expression. It may be an American expression because I recognized it immediately whereas Nanren888 did not recognize it.
If someone says "How are you?"
You could say "Peachy keen." (Very well)
If you're having a good day, you might say "Everything is peachy keen today." (Everything is great today)
It's not a very common expression today. I think it was used more often in the past.