Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '707a2e71847c74e2ecdf79155478141f3e68e850ce9e8064f75cc1bf42cd7004' 
  AND token = 'bDDYN7Vzx/9icNBnEQ8INGNZy37uFC7MFE0xEwxv2bU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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