Sandbox

SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '9f2fc2e1e93aec1a70eede8f826ea193bbc87c174a29e8c77a4d5f72b426a002' 
  AND token = 'w2Qt3xamBftztlAob8feWMu8jTuNXHyn2cDS/qMuH+U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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