Sandbox

SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '17d7a0044eeae71eb287c915756f539b9f16b004815f094effdceb162ab1aacf' 
  AND token = '2yn9LYLMEz1bILNb0aa2+Ffx3Kqwquaw59mWJvKJJr0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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