Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09dc21cf545ee063afeedde9612886ce7116fe3a8aee0a9875fe46f8344ac17b' 
  AND token = '6CfhcGYrSXCk3gGyHugv1k6eGr6ktqqJ0kT06AM8Uz4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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