Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '432c7514e5a0036e2f1e0efab8dd905aaec7f5a7b6ef16c1b9e70f80f69998ad' 
  AND token = '+yS6gtrkIKuV2S9bPwXLnlODHFCvCnq6lMQyrlCz+zY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}