Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '34a5f5a231debe0374866d170cf2551ccf5b24466d5783f96c76e95dd2bac10b' 
  AND token = 'D7GAm/pgSSZed4UKeMWMCS76RfL6wmABW+kSo3yrZXw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00059

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}