CREATE TABLE t1 (
pk INT AUTO_INCREMENT PRIMARY KEY,
col_int_nokey INT NULL,
col_int_key INT AS (col_int_nokey) VIRTUAL,
KEY (col_int_key)
);
INSERT INTO t1 (col_int_nokey)
VALUES (0), (5), (4), (3), (7), (42), (5), (0), (3);
SELECT * FROM t1 WHERE col_int_key IN (3, 4) AND col_int_key <= 83 ORDER BY 1;
pk	col_int_nokey	col_int_key
3	4	4
4	3	3
9	3	3
set optimizer_switch='index_condition_pushdown=off';
SELECT * FROM t1 WHERE col_int_key IN (3, 4) ORDER BY 1;
pk	col_int_nokey	col_int_key
3	4	4
4	3	3
9	3	3
SELECT * FROM t1 WHERE col_int_key IN (3, 4) AND col_int_key <= 83 ORDER BY 1;
pk	col_int_nokey	col_int_key
3	4	4
4	3	3
9	3	3
DROP TABLE t1;