Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7209cb0353f0dc3e5d98fad6581969ae345b28164494d0cb2c3542c3e4667b23' 
  AND token = '9cb5rSxtBsL/9Y8N4WKJrqKkxwKiCaujH39KVZuipIU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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