Why the whole Table is locking during a MYSQL TRANSCTION? [duplicate] - php

Question

transaction Query
mysqli_begin_transaction($conn);
$sql = "UPDATE foldertable SET trashed = 1 WHERE serverToken = (SELECT serverToken from servertoken where userToken = ? limit 1) and
(folderId = ?
or
RootFolderPath LIKE
CONCAT (
(SELECT RootFolderPath FROM foldertable WHERE serverToken = (SELECT serverToken from servertoken where userToken = ? ) AND folderid = ? limit 1)
,'/'
, ?
,'%'
)
)";
$stmt = mysqli_stmt_init($conn);
mysqli_stmt_prepare($stmt, $sql);
mysqli_stmt_bind_param($stmt, "sisii", $data["userToken"], $id, $data["userToken"], $id, $id);
if (!mysqli_stmt_execute($stmt)) {
echo mysqli_stmt_error($stmt);
$serverError = true;
return;
}
// echo "\n\n affected rows " . mysqli_affected_rows($conn);
if (mysqli_affected_rows($conn) > 0) {
sleep(15);
// Insert into bin folder
$sql = "INSERT INTO binfolder (serverToken , folderId) value ( (SELECT serverToken from servertoken where userToken = ? limit 1) , ?)";
$stmt = mysqli_stmt_init($conn);
mysqli_stmt_prepare($stmt, $sql);
mysqli_stmt_bind_param($stmt, "si", $data["userToken"], $id);
if (!mysqli_stmt_execute($stmt)) {
echo mysqli_stmt_error($stmt);
$serverError = true;
return;
}
if (mysqli_affected_rows($conn) > 0) {
$success = true;
mysqli_commit($conn);
}
}
Insert Query
INSERT INTO foldertable(serverToken) SELECT (123456)
Problem
if execute the insert query after transaction started but the insert does not have to wait for transaction complete . Because the update query on transaction does lock row involved with insert query.
What I wanted
the Insert query will run immediately if it does not contain the same serverToken needed in Insert query.
Thank You in Advance.