Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '36a088a92b5fd38b59e3c067df2cafeff75244b4fbacd39adb9ac19246febed0' 
  AND token = 'ImQPxWZSPokS0Y8DoTOnlJCZpiwrUYNZm/IkajpBjsc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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