Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '653d39f8002a1b705241e5b763d82917791bea790e6487e388a9347ccb05c8e9' 
  AND token = '7opk0Mo3bhTRCqSuEh2N+sKK7BjwyDUNYfxPD5SJsas=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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