Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2327e15d46176db76ab0bf85c3ae09fef2843bde2c33423ce28003eb56784979' 
  AND token = 'VhvNzCE8ttGiJa4N6Uxwby23Te6CfBawb5dbIyDgrKE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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