Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aa9a8c6ff7079e19cc367bf74bf008ebd41f669e91b5f3fc573aa0783a4d2898' 
  AND token = 'PJcWt2L9YmO/dgCakaVbJwQohsFDJogHh8xEvhWXsec=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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