Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fbf41dabab3ae65f4bef8050958357623a860f6143aff59c250384a8fd191d53' 
  AND token = 'E3AM3q3RKZOSxx4o6TcVHZYerfGDmjOMxGSBqUcNGGI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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