Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a5a1efd30cf0b5c5b4b6f8ce27f354182d489a0bf34968b154bfa4b64449dcb5' 
  AND token = 'AKvXDdLZllXcNCZwskFtFLkPp+byxoIHz+TXAp9svME=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00060

JSON explain

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