Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '25977b74700a9f0a90a57abe20b336bbe4560be9c86c64aeeb0026ab9956e8b9' 
  AND token = '204LDjmsmkuMCFU0xT9T96nitSJtVAsrsCBsyBEKrjs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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