Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5ba165d207b9368925ea7ebc9ba11449b4913f1b23615dc0beaa4abda6b6c730' 
  AND token = 'UGlfVoVMXizsnb+iNvWMnTEXgO1m7aW1nmU7Dx0sSPI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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