Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c75f7f455c85576ab0617366b9d59afd219300d059c2c3c24f8931468c98bb95' 
  AND token = 'UeamEFykP6Cy9/t+KjXkWEoJNC9qLP5r0+QxNxyfX9w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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