Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'edc45e1ce94926b359ce05b60cf92471f61f2d19be25c96dc5630701e01748ce' 
  AND token = 'kOByffTw0bB+c7iq+WITu1LtnRS9AdNJBFexWoNWoag=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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