Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aa8318370c3ac8b077687a9903c4857472d14d76dd25f42761699ed5958b6ec7' 
  AND token = 'xbaQNajq6QQDEnSDr2n/3L0wZOYTbcoUTiEWiwqWodI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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