Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6400006f64738318ec5ceb2e7bad09960ab7ebf96eeab554e4d81c3db6dd079e' 
  AND token = 'qeEvg9+VNPsPxx6k4yZ9GGpJ+4Vh/kSZNMwr33y+qyI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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