Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fba0382d1fa466e09e46cb33d9e0781b34dac89001513b25b2795c4aebe5c30a' 
  AND token = 'prhCV50bMKxSQ6ec4vpgSd+syJfYDuSheEDtxpnHifE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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