Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ef01aaef80c7e33920de7aff61baa07ffcebae133e63d54a5147be90fd6104a3' 
  AND token = '58Z6U7jqiAIpZamgDmi6GfOj9Rhq05J6OjyR7N2iaTE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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