Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '01c5cfc029c3dd14dbc58b57b892fa90a08cece0aaaf7fc0ceba4f68e3fce31f' 
  AND token = 'oqolbJMx/mWMEaa4k3t3oobXaC09QwRJ6g3Eq1IoFRU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}