--- find a stop near *pos*
SELECT 
id,
description,
name,
ST_AsBinary(ST_Transform(location, 4326)) as location,
ST_Distance(
	stops.location,
	ST_Transform(
		ST_GeomFromWkb(:searchgeom, 4326),
		25832
	)
) as dist
FROM stops
WHERE
dist < 500
AND stops.ROWID IN (
	SELECT ROWID
	FROM SpatialIndex
	WHERE
	f_table_name ='stops'
	AND search_frame = ST_Buffer(
		ST_Transform(
			ST_GeomFromWkb(:searchgeom, 4326),
			25832
		),
		500
	)
)
ORDER BY
dist