Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ae0c9b612b669c8a925996bfbc30cf96ad3dc8b19fdc080450161a0500fbf8a8' 
  AND token = 'vd60x6wpwh83avNiaDeRuqx2wJKxrIp7Ui70iSzQI4E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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