Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0b45f9e2e7785eea753a25a3cf58fa4615a21cc1513caef73b72a92fd66067fc' 
  AND token = 'VnVT6DRJOEw1fvdeeRd+Q3wBehVgBjl9PZk66yqtC0s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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