UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'pQTXtYhYiYDz7LVdmvVZjYJXh4DVcF223rFvajSvZPI=' 
WHERE 
  key_id = '5739a7506e6d9cd0d947b15df9c0a7fd8859c5af6dff369057b4875703b96fd2' 
  AND (
    token = 'pQTXtYhYiYDz7LVdmvVZjYJXh4DVcF223rFvajSvZPI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00030