MySQL Update query hangs - Time exceeded - mysql

Question

Hello I have trouble running mysql update cross databases. MySQL UPDATE query hangs with error - Lock wait timeout exceeded; try restarting transaction. I know similar questions have been already raised but could not find any working solution. I am using this query inside of the PHP script. BUt when I run it within mysql server it does the same thing. When I kill the process, it completes. Here is what hangs. PS: This started like 2 days ago, before that, the query ran without problem. Temp table is filled only when admin pushes there data from html form. 'Teams to esc' table grows like 20 rows per day.
UPDATE query -
UPDATE escalations.teams_to_esc
JOIN domguard.temp_table ON escalations.teams_to_esc.ticket_number = domguard.temp_table.task_number
AND
escalations.teams_to_esc.team = domguard.temp_table.team
SET
escalations.teams_to_esc.`status` = domguard.temp_table.`status`,
escalations.teams_to_esc.`wiw_assigned` = domguard.temp_table.`person`
WHERE
(escalations.teams_to_esc.team,escalations.teams_to_esc.ticket_number) IN
(SELECT domguard.temp_table.team, domguard.temp_table.task_number
FROM domguard.temp_table);
First table - temp_table
CREATE TABLE `temp_table` (
`ID` INT(32) NOT NULL AUTO_INCREMENT,
`task_number` INT(10) NULL DEFAULT '0',
`type` VARCHAR(50) NULL DEFAULT '0',
`assign_date` DATE NULL DEFAULT NULL,
`team` VARCHAR(50) NULL DEFAULT NULL,
`person` VARCHAR(50) NULL DEFAULT NULL,
`task` VARCHAR(50) NULL DEFAULT NULL,
`comment` TEXT NULL,
`short_text` VARCHAR(500) NULL DEFAULT NULL,
`delay_comment` VARCHAR(500) NULL DEFAULT NULL,
`color` VARCHAR(500) NULL DEFAULT NULL,
`status` VARCHAR(500) NULL DEFAULT NULL,
`end_time` TIME NULL DEFAULT NULL,
`tel_it` INT(2) NULL DEFAULT '0',
`co_allocation` VARCHAR(500) NULL DEFAULT '0',
`co_allocation_text` VARCHAR(500) NULL DEFAULT '0',
`delay_code_text` VARCHAR(500) NULL DEFAULT '0',
PRIMARY KEY (`ID`)
)
COLLATE='latin1_swedish_ci'
ENGINE=InnoDB
AUTO_INCREMENT=2483
;
Second table
CREATE TABLE `teams_to_esc` (
`ID` INT(11) NOT NULL AUTO_INCREMENT,
`esc` INT(11) NOT NULL,
`team` VARCHAR(500) NOT NULL,
`ticket_number` VARCHAR(500) NOT NULL,
`closed_time` DATE NOT NULL,
`checked` VARCHAR(500) NULL DEFAULT NULL,
`reaction_from_tl` VARCHAR(50) NULL DEFAULT NULL,
`status` VARCHAR(50) NULL DEFAULT NULL,
`wiw_assigned` VARCHAR(50) NULL DEFAULT NULL,
PRIMARY KEY (`ID`),
INDEX `esc` (`esc`),
CONSTRAINT `teams_to_esc_ibfk_1` FOREIGN KEY (`esc`) REFERENCES `main_table` (`ID`)
)
COLLATE='latin1_swedish_ci'
ENGINE=InnoDB
AUTO_INCREMENT=2670
;
=== ERROR INVESTIGATING ===
Output from SHOW processlist;
17107338 root localhost \N Query 1278 Sending data UPDATE escalations.teams_to_esc JOIN domguard.temp_table ON
escalations.teams_to_esc.ticket_number
Output from Transaction settings
SELECT ##GLOBAL.tx_isolation, ##tx_isolation, ##session.tx_isolation;