Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '559c720b69911768fd94086be58e8b7ddef7c6a799ed55224156bcbf7f8a89f8' 
  AND token = 'O6FPuPGg6ZjvnSdD5o13UjiEvohL8rLLoXE192CVfM0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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