Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '67534fcb990f3f79db18e3fcf624d035eae658fdc57b950ab312dccda1e67376' 
  AND token = 'zkOzGLrSD0YHPyRitVt/zRGtOhuKOaYUn7fAA22eDIs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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