Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7a466113ad8cc80a910019f47215e2f0da36a895446ee806ea00f15696ea3a50' 
  AND token = 'F2BZHT8G8bQf1wI/JeIp8Y3wGgraUlwieaaQLVIZeyU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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