Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1468ee03973ce4d424fefe2f5820c45ee4ea33a14851c596626c13ae2b0efe8c' 
  AND token = 'XnpzDby7RghNiDCt47bIN/MNRTI97qHwCP/SLuSs3gQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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