OQGRAPH doesn't show proper error if underlying table has not indexes

CREATE OR REPLACE TABLE t (

	a INT UNSIGNED NOT NULL, 

	b INT UNSIGNED NOT NULL

);

INSERT INTO t (a, b) VALUES (1, 2), (2, 3), (3, 4);

CREATE TABLE oq (

	latch VARCHAR(32) NULL,

	origid BIGINT UNSIGNED NULL,

	destid BIGINT UNSIGNED NULL,

	weight DOUBLE NULL,

	seq BIGINT UNSIGNED NULL,

	linkid BIGINT UNSIGNED NULL,

	KEY (latch, origid, destid) USING HASH,

	KEY (latch, destid, origid) USING HASH

)

	ENGINE OQGRAPH 

	DATA_TABLE = 't'

	ORIGID = 'a'

	DESTID = 'b';

SELECT *

	FROM oq

	WHERE latch = 'breadth_first'

	AND origid = 1

	AND destid = 3;