Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '202a4b0895aa1cb24469cd53c8f485af8768cd44327eeb66cde8718353de9045' 
  AND token = 'UdWIyqUdqrP0SaI1uGFZwEK2efd2PH7XyKkN9Aes9B4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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