Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c15cc313c89f95f91f392118baae16488395b1a8166e98593b10952016c6a794' 
  AND token = 'AE3K/rvCZ9A2Z7F8ieK9+XuLNmnh102V5C0MCkSgr/4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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