Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9809bf587621cbb227b3346f21997a2bf9c97f565c929b02c56d32576ddc3e22' 
  AND token = '+PTAcdlcfg0q3qHcuS+J4uiM2Nz9fQ7AYHyNS+ipbHA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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