Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0e1423b5a4881a2004d3603e03495cb7f70c2ff239f04086c4fdcf9c8b65e9ab' 
  AND token = '1s0GcvZauYqg2bFfxh4JLD9i5dRHXCnXtv/CV0gCwaY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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