Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2e11dac3c17ccaa1baa46080ea1638e22e6acada6ec5b9d4e5ce5439918dc05d' 
  AND token = 'hq9yceHYO15rLp5Z2t2Wzd3EBTzQmNmGBHDlUc9nqDk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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