Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c569adad9c948a79f2b0b09f1095da6489cf0b778ad8011a4391c27c606518d9' 
  AND token = 'sh6D9rW42HlsuxNvL8nbOtBXeYFuznRH6PgtuH5XoEs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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