Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '43a30c8fb64cdb7a73b91812464d501846ee8b220d57303a0f3a381cb3ef9a99' 
  AND token = 'gboRs0aktpeBSLLSP3I7fyO2p0Om0RsR1zNiIyA9Y1Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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