Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '0889c527be197bcf75145d1999e88c2626a0edc2a85e8cafa7f216ddaff4ce08' 
  AND token = 'OtwYQHaHsK5f3ApOPpu0eNTjZ7bG2it1/NL0SfL/mMg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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