Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '240571f1763a70080b74285fb7ff966664e4ad3d07e8b93747d8dcb9a78043fa' 
  AND token = 'MZUH/HfqdGdSBrek0ndchGGRngVFbgGEhl0Ht4U8YUo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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