Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '23dd63c2cb53f0ba026292e35ce0cc19431230cb4550a51b91bd022e0a228382' 
  AND token = 'xWh2Q+eVV2oJI83V/ryy0O46Co0P6YMCv+kKbopPZLk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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