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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '02b96df16d352fd0039db77933890cf6396a9f93f9e5fbe9ed084620fe59f5e4' 
  AND token = 'hF4ziYqhjmYoUOFcG7S6bhISjVd4J7aX7EEluI4YmY0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00007

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}