Sandbox

SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '2f91791a62ef32b478f043742c8056a89490c73a92d3ef080f8b4c782e0db29a' 
  AND token = 'aRT+Rq7axjUt3lmKNENMWowucqfOoUZUGXx+LdVBTQ0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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