Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '35ed1595ac41b49416fac248d7a5a90476ed150f600984a9a18ba4ffe2490f41' 
  AND token = 'LJlu+XdU/hgZPN+X1p9fVkEu7lNXG3L96GbfjOFv+C4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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