SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'd0de6781599f572f793be3476c559574f3c5c41d2bb1cb9e95c08b2f772355c1' 
  AND token = 'hupYvT9bHb/r9KWzyozd/I6YY3CR/ZB5qgLYfwXTSv8=' 
  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"
    }
  }
}