Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bdda2305850c3c0c1c7ef48d90f25591f4feb968a05350470e4573e177032724' 
  AND token = 'yh+or9urhGwNlAWrbKjSJmciQsyoNhqkyrjFsz0ga5Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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