Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0db4bd4c9804b240a84896b759ccb57289840abae30b7bf1a50a7954202c30f4' 
  AND token = 'pqTKdZEWL+2dmrHGmZXeH1v7AyeoJmxYuoX6EhWZzn0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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