Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7a60120a87826165532a96d6ce37b1a7a49f4978ced3983efed4af16d2f74401' 
  AND token = 'J8qhQ6ZTv2m6XI4tZakq8b+wmP0DTtfz4tNvbWq6GEY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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