Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '657cf155254e7decf830c4ae06bbf226bdde62f68f258b81b85bdd463cacaa20' 
  AND token = 'ceP7Qv5CXXG4BszfmjRgMdFOETije+EmeVFqKuVS8is=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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