SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fae75d9f2872429038b037fa23bd0d0ee13c38a31e4f6a6d41ebf94f1e70f118' 
  AND token = 'ZHPCl3QGFZgkjDCKypp+k8viITywLMGaHJB71FqvsqI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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