Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7533f5116a92277ce5e3396e6eef8f916dabc2b7c575068b6e28feb82741e85b' 
  AND token = '0sa3OUJQ30TYvgjcrjo+oKu4jVc/cAI4WbPssEOfXVY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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