Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7339f3c18fe326adf2af8f4d8d89c7d4eca31dd0a55c349943f48026328bc2fd' 
  AND token = '9T4GefPimzV/O8TxD441vUcD24OJ/HYLIjNckWQ3Ntw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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