Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd4d381b19b0b0ee5c4ed9fb86e38f0611a353228e35867fd01a6d48c82e7d940' 
  AND token = '7BR79NbvgZMIrzv6XNwmQI4q+SD64ogf3kRBo6tgnxE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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