UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 300, 
  token = 'SpXzfN2tvYX2h3LDl6rPUvYu6amEA2H93+aFmEg9PIQ=' 
WHERE 
  key_id = '938812d20a7b51417ad162030c12be35c2cbae6340a9b33777aa250332017b7e' 
  AND (
    token = 'SpXzfN2tvYX2h3LDl6rPUvYu6amEA2H93+aFmEg9PIQ=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )