UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'RPuBBj/DSRrVMYICJTzPwX9DTBuINWgXkWBhlWulBHo=' 
WHERE 
  key_id = '51f8bf5ce317f610888c5600dcc27f4bb4ad69e99551e15306e73121bcd6db31' 
  AND (
    token = 'RPuBBj/DSRrVMYICJTzPwX9DTBuINWgXkWBhlWulBHo=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )