Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e08769bca5342bc711ded5cbf2ac7c938ce3fb50faae98f4ef7e128014bf3997' 
  AND token = 'tt1I4uXsK8bGazple+NN8uIHWIL4rwvRezPJ3TDYs/k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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