Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'babc0ff5f64c23b8ea19e62d879faeaaccbad6549ff64336f50ccc25d77117ae' 
  AND token = '3MyrR/PLcLWMwI3QChAb9wwIXA2R7SEwnIpPfy0Cpfk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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