UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'k2azJtfZ+QIXe7ezeVo4ajWzGy4eij8E+GCe3uOQL08=' 
WHERE 
  key_id = '6a515c40757102b7135acaa73bc747b8901620b15d205ef374c60bc66247ac5c' 
  AND (
    token = 'k2azJtfZ+QIXe7ezeVo4ajWzGy4eij8E+GCe3uOQL08=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )