Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '91f7423a4c6bc80f9593129be0e8b1f6b5f69ff85be8bdd33680f5674efd40bc' 
  AND token = '46eR1cQ9UiM5Vb5fpSrAdchCZ2UH2Pq1CcE6aznjV68=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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