--- a/plugins/mod_storage_sql.lua	Thu Jun 11 22:02:54 2020 +0200
+++ b/plugins/mod_storage_sql.lua	Fri Jun 12 16:54:38 2020 +0100
@@ -391,7 +391,7 @@
 	end
 	if query.before then
 		local before_id = nil;
-		for row in engine:select(id_lookup_sql, query.after, args[1], args[2], args[3]) do
+		for row in engine:select(id_lookup_sql, query.before, args[1], args[2], args[3]) do
 			before_id = row[1];
 		end
 		if not before_id then