Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e09c999456e0f93f58718f3137de479e1761cc72cf32a8b195fe0170c01e366c' 
  AND token = 'aQCARLTM4MzRnGC+jtXqtEwdDhC4clvGT5oWP0txvNc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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