SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1162dd82219f6a29923c649871ed356aca776a15a91528bafdf8f91a24ac8059' 
  AND token = 'tPZx2scjF+tG/Um/UqoS2y8w4muhVGzPr7zyDqLuqck=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}