Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06e8f7b371bb76c25976367fe8b367b9a444487b988bcf2535bc063ac84d1e6f' 
  AND token = 'P+dut+Zuvj51w90RGX4d04N1lBWnJJ1X7lYe5ViXVTE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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