Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a5919d19e0a7020b50f0e1a53b286c0c52c9b837216cc7451a18bb02d706f629' 
  AND token = 'Tdq6U3vAu5Weqo3u0EJcyNp3+/KIbCx/o3cDpJnRHHc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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