Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '228bebdb98a8f3c133fe20cc6ae72d74fe666348f022a0792a7efcd3a1f1ade7' 
  AND token = 'z9cdY+p6j9Jf11fHv2B/84CL3VC0unn8sC9aRQR7ffw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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