Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '322d81c2c769c70717bb0dc3dcabd413889914048d83c184aaff49be623ee4df' 
  AND token = 'OujM0jWHIhQfWAC8O2pw3mGliEy1d0KkI7taKIUZ1G8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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