UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 300, 
  token = 'xkasyNZqWs3JEcMmE2E3NhaDBtF0S3+PPzmv+8W5UH0=' 
WHERE 
  key_id = '795bfa1dee8b7b1000a2399cd5303796931a3814407a4f662400b76328878a20' 
  AND (
    token = 'xkasyNZqWs3JEcMmE2E3NhaDBtF0S3+PPzmv+8W5UH0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )