Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4deb3fa57bd7f1df65ae8206b69aeb32d9b3e44b2d352e26729b2636bb65eef7' 
  AND token = 'jmcL3TAYReXtN02l5GxykxIGUPcPcis5ZsBxJBrjhaI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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