Get labels by text within a board or category?

Is there a way in V1 or V2 API to get labels by text value within a board or category?

i.e., I want something to the effect of 

SELECT * FROM messages WHERE board.id = 'myboard' AND label.text = 'somelabel'

or 

https://community.site.com/restapi/v1/boards/id/boardname/labels/id/labelname

I want to show a Custom Tile for labels if and only if there are messages in the board using that label.