Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1b4459657d24fe0fc383c430978fa77b64fd30c1be392928434040194c8522e5' 
  AND token = 'G6aR8fUaL6fDZZnP4Rhv2+3yFnGHY//HMN/4kMF7Vis=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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