Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '204c74f89613fbd7fdf65e8244b5e63e8d88ac138e2be87f8f7e4b62512830df' 
  AND token = 'igfpshDHph6naYPNXqhtAmhr4pr67Lb1RZpur4VxDm8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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