Sandbox

SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '45214ad8652722863c229a84fcde9b8f093cf35bca52e9a8a22761a7cab4dcb7' 
  AND token = 'VMABLw872xq5m0TVjqnODPTab3jqC8EnQY8Z/ZepW0M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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