Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5a99467ceecd382233562be4cdea471255f39ac8a994a101860ec5f9948a08fa' 
  AND token = 'G8MNd1fouy0dq6OGTorgDKfm1xk4JkMByEdo0SrtF2M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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