Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '11d374de32cf7db49876ce3a19e12cd262f9a25461e33c6ed245d591b06d4a1f' 
  AND token = 'vBCFWW4aG3+vieoGg1XVgJ3V4JTd2GmaUI4mKUePjoQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}