Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0ff233c3636fba9a8b9c96ae058b398cbaba87b48066d066da57201f6eb13594' 
  AND token = 'uVE/m2kjeEGxZUjdAcMdt381yEBgOSeayiw6jgkMJYI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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