Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '23ebd8a328cc8ca5597e102dd6e4b9bcaca4f004c59942194b97264280e01df8' 
  AND token = 'uiOcNghAmJUauFmVYVATdVV6f6WJI5Gk6SWtBhJ7ygU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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