Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ea7d21409f46b2cc7adaf6fd55699b303d0e14b6928c64a96aae926411e38697' 
  AND token = 'gKHAoPknjmufWKfNPLj6h4UqqNOxsbdwC9oM92Cs3zI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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