Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5aaf1b4fb93cfaa62d38e39e0803ddac2223208816cbb93d1acf6a7d05481412' 
  AND token = 'X5fPe9yH1m5MxB4XzVjf0m3j4j6jya7JxD7MV7JrNUI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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