Sandbox

SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = '411d9aca59017e4287f925ab1b666862cb74cb5098bd40f7c7791577f4f75cd1' 
  AND token = 'Eb/ar8a5wWiN6KuM3/pk10Pwqukz60JaGF/bT7C0oxg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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