Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24eb0ed95a0e48ffb9339637b8baf2b8d10052339ea310fc16f12ec567ab4d9e' 
  AND token = 'Ki9hEMlyCfQYNH6OjKYB7OczIP6gmAg9rMNMZupts90=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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