Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '77cd5ddd7e69d83f9a4116b26fa12cf9cfd717cfa3258e68241a5121a381b076' 
  AND token = 'Ji8QCLf7VcfwzDmt9sI7Uy2LKDM8P902xOKzcynTEoU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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