Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '3d9d24fe6c03d120d64eea4b0137adf9d3a9e6d384531e39850937c6a7100487' 
  AND token = 'rTp5O6QafI5Irf6CuIIF/Aa0OQiMaKQQecDG+rYD24c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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