Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09067cb6fbabe9a06b744226211578983c395db6dce0ec58f442b53ec9e9e1a1' 
  AND token = 'p9cLf317gVJrZ5pP8Ldb4HIzx1bHIFfrRARbRroCn58=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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