Issue with Query using Aurora-MySQL works with MySQL - mysql

Question

We have a simple query that checks if a record exists in one table that has the id of another. If so it returns the id. This works for small data sets such as the working example below in Aurora.
However, if we have a lot of ids (like 1000) the first query returns 0 rows and the second succeeds in Aurora but works on MySQL.
We have been unable to see any optimizations or other gaps in Aurora MySQL that would explain this behavior. Any advice or guidance is appreciated.
Working example:
CREATE TABLE `test_table_1` (
`id` char(36) COLLATE utf8mb4_unicode_ci NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
CREATE TABLE `test_table_2` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`test_table_1_id` char(36) COLLATE utf8mb4_unicode_ci NOT NULL,
`another_id` char(36) COLLATE utf8mb4_unicode_ci NOT NULL,
PRIMARY KEY (`id`),
KEY `test_table_1_id_foreign` (`test_table_1_id`),
KEY `another_id_index` (`another_id`),
CONSTRAINT `test_table_1_id_foreign` FOREIGN KEY (`test_table_1_id`) REFERENCES `test_table_1` (`id`) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
INSERT INTO `test_table_1` (`id`)
VALUES
('e54b3097-21ff-4d7d-8bee-5aa62e66d9b6'),
('4fada427-ef5a-455d-ad55-831de6192dc1');
INSERT INTO `test_table_2` (`test_table_1_id`, `another_id`)
VALUES
('e54b3097-21ff-4d7d-8bee-5aa62e66d9b6', 'aeef668e-1365-41e8-a4a7-026d9a021935'),
('4fada427-ef5a-455d-ad55-831de6192dc1', '61e7b307-e356-4537-bcc5-927c3c217992');
SELECT * FROM `test_table_1`
WHERE `id` = 'e54b3097-21ff-4d7d-8bee-5aa62e66d9b6'
AND EXISTS (
SELECT * FROM `test_table_2`
WHERE `test_table_2`.`another_id` = 'aeef668e-1365-41e8-a4a7-026d9a021935'
AND `test_table_2`.`test_table_1_id` = `test_table_1`.`id`);
SELECT * FROM `test_table_1`
WHERE `id` = '4fada427-ef5a-455d-ad55-831de6192dc1'
AND EXISTS (
SELECT * FROM `test_table_2`
WHERE `test_table_2`.`another_id` = '61e7b307-e356-4537-bcc5-927c3c217992'
AND `test_table_2`.`test_table_1_id` = `test_table_1`.`id`);