Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b7067ad7d0496641c77f3fd5612488c0462d3f06369d93cd199dfb70934b217f' 
  AND token = 'WUWyXhTaGhIsCUk2bV7fN74xAdCobHdWhHI6PZ++9+Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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