Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5eb0fcd8b43b8ec9770277c9d6b759d729aeada977a8a540226f1896d0a1b5a1' 
  AND token = 'Nd97F8mntK6D2hb12NpwJH9ANI6wYomLxWG+I9APF3o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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