Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5f2d5742954c02fab7637e26253d7ae4ab564c29f4206ec302954f005e32d6d8' 
  AND token = '0rc/zhkV3AZiCGOeVkye/JGQYToHyBdpn80XNQSGd68=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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