Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0bef122775b968b3dcca3f7e9a686d7b957bb0ecdfdfc03f88ecf76004d501be' 
  AND token = 'Qr6creRUnDXspuaZze90TPni6b4cKXyQqMfFynoUs1s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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