Sandbox

SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '2c39c5d9809f178a53b92e1b0d2519003b8ac862320460965616b314c5c190b7' 
  AND token = '3a6HtYWUDbkpEJLdpIpBPmgO+Dq1a8xLHFCNeX5yedA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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