Sandbox

SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = 'bc371b86485b9b31dfad9610dd06914935109d88d792ce6c71314b30b2300091' 
  AND token = 'SYMJbhvaz1ybHLLH5M8wQNOJAAHj4jTxxLaRlJWQ5DQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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