SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'cf6291c1d60f22653fff986cee95683779b68bf1ab7f5faa0c4665c38fb906d3' 
  AND token = 'KQDA4LpsVLGuKFBrifzBmD/XCZnuCMRYGlpt1mewrpQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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