Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b1e9a668127327e07f74a5072c50a1eee657ef7f0924e4665e488ba64751e132' 
  AND token = '6E6rt2M6uZq+EvS+fqByJCXoX1qVpqy/nP9hDPd1nTw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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