UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 300, 
  token = 'SNy1fM+ARMiC+1VIMzX0a2EDrtp0CGF3V4gI5809uoI=' 
WHERE 
  key_id = '21343cf889a08e163f8e980f639e7a8200475e58d4ce81487c4a0da4b5451510' 
  AND (
    token = 'SNy1fM+ARMiC+1VIMzX0a2EDrtp0CGF3V4gI5809uoI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )