Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '80ed68fc7a9ce26b2bad77932653b7ed4bd33a89f34b6243bc1aea4966ee0467' 
  AND token = 'w2f3dYPwe7goNI46/9LODM/uZYco+XU/aDUTMnhTpVM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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