Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4cd27ecd81d2e0f15ea0d2202f32c02a94a4bc159e5a83feff7e99d44df87e89' 
  AND token = 'uz7w54Tu5fnYbp3FPOOQpthN4LZkjhc7GPqBbOZOapU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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