Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e2456aa1238002de01d24a4c65eaa9e7a3a29e47f6aa06aef305a13fdce94aee' 
  AND token = 'jRysWNcfg6BEnvJN3AIK0SVwzqFQEeqDoNE9mIBkcME=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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