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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'ee44f97d3c852db479a749a54a86d9c6ef8e798b1f93be748828bd82138a608b' 
  AND token = 'ZcM3UzK2h+0iusM+E5uyiqEZsfXaBGQhkua9OiNUWnA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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