Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7e319a2621b289b2796938239481d5fab139efcf5418bce18d27a4b055677ac4' 
  AND token = 'jLO352GVi4gzFvGpso0exx8OZgp9CKUL81Kvt1paf8A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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