Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8f635ef664fe8c7098865bc3711985478482533eba02124db72eb2185c5eff0a' 
  AND token = 'jp95CtTmq3/3TkXsis2sVZ8VuaTLH1WrDrytzGdiKTU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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