Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f482948bbb576cceb73a2c014b7f4e5f85bcb60c267516bd658810d316dff6a3' 
  AND token = 'WssfBnM0s5GFPl6tN18I+mmLKlF0ngxskFD5vsJBD2k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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