Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3a2c7235d8a0e343326b2daf8a0d9835a3f8c3c5f53ff8811eb19ea6c4acb1a1' 
  AND token = 'f0W3hTTxZvKbCOOB5DDDLEKYoHXvcYbc2xx/v7W3ERY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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