Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '243405eabdfd7653daf19ae49e94e4f153fec49530972b496556bdf7c4c05ce8' 
  AND token = 'ClBPBRXGd2/P0ZAbQD5HB1f2A+A+ODkhLXl5C28W2QA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00058

JSON explain

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