UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 300, 
  token = 'sZTwVRwR8SHUILbb14CfMG1EyrXvCwK0DEbP4JI2HVk=' 
WHERE 
  key_id = '50143ee1bc8c9be0b417a50e82819d10a909009fe435651b63d4151457841366' 
  AND (
    token = 'sZTwVRwR8SHUILbb14CfMG1EyrXvCwK0DEbP4JI2HVk=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )