Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3ac04b55d80a84cdd06b3d7b696054673eb71578a659ac79e61ec340e1f8bde7' 
  AND token = 'LodgiJbZLoRGbD5mKN43JCTYmOShiJ88sFUQOMAZnpI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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