Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '453ad72c1a6634cc4e0c77db9dfa740ee871e7272b4f3c4cf09080b022e2118d' 
  AND token = 'NEX+lS0dijkVaJ6uFfSEDZte8/pSYl9ar4I9LtMcIu0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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