Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1b1e54650e702769494f5ddeeac5fdf7263ff8cb27b540e4ea31a049547beb0b' 
  AND token = 'uaF99SIdce1dzV/rBibcEL5pVlAA7OJ99O7acp+ZxjU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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