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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'cc9096018abd9b77284e3f8b1e898b95ae20aac9c5f081dd98634b976e5fda61' 
  AND token = '6ULS1yHhj5aycpRLFbNAkroIktQ3CIqvKhof+OAE/oI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00009

JSON explain

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