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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'bf84aa52126850a109ce8e696d40f70a1bcbb44cf8aca0c9f0fdfc0144bf77df' 
  AND token = 'BXZjH6ucMHyMNODRmzkeY7enusQRd/YlwPiQQ4g397Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00012

JSON explain

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