Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f56c4347f736d6fb95fb0e33184ba22a1347191012f1ae1aaf16202633998654' 
  AND token = 'JdHhqbjfDPAjgly9sheKdyt0wHhpne5LFzf9AxcHjWw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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