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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '2cc12b33465fb9d2af0847ecd1d6be5102e76bc08f5b8bf51f5c9cf95e24f706' 
  AND token = 'FjnUu7Ad7u/FeSnDDK+pZSm+QGG8wZNb0pBAI5ObBpo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00008

JSON explain

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