Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60d25b8a3ea1d7a4b0d439a41facceeeeb812aa03bef02c1675490fdb841379a' 
  AND token = 'F/kJuGiqCEVUOspzQuVlf2QXeO8g3bVRrgi2mcYPWrU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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