Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fd0227cff568c63b8e6a1fef6fe01d804faed28e90aba732ace93abffdbf9729' 
  AND token = 'gUHQbtn/kwrUhlhsZsF2obsVVO6Fvbz+feteo4nFmuE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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