Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '85fbe2ed0623ada06196470ecf67804f79744e9252b3a0adf31f398030ac66f3' 
  AND token = 'q5fov22bdZ3D9gd5y3Oshp1zR9amnHlewSf/PIPr2cM=' 
  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"
    }
  }
}