Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd67d330d0aa110775a33fd92feeebeb8f408ad756c1f090207b56e582cfd14d4' 
  AND token = 'N0ovQrNb01aEO4Ol7QW7JoaQij8GW+fM53UZttYuP1g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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