Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5cc080ae0902c7f8a5b8b7e0e5cd71758fe0b3e7c5ee9c895569aa832a5424ca' 
  AND token = 'lPKmkH4L0MsFAA/3JAEU7pWSHwtybME+/5P+9QFxaa0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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