SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '87d0c65b4561f556a6543097b123b42e842271dc838143f04d1f7814035dc98e' 
  AND token = 'cAsfAFCFVgIgqIa7S7Gya93PUnb+W34pJSHlB9KiglI=' 
  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"
    }
  }
}