SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f14812745a6643257af6854a54ce8f11826731606260fb742008bd8e5f56b4bd' 
  AND token = 'UnCigPKU4m3tZ+xOlB5Zw+drmg9s1HgtWYrG/duns+k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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