Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1e2833f3c2f5089bb5eff6e160aefc88272ca883749e05eb6d3bdddc43a1e835' 
  AND token = '3slFUYzf/MWVJ7QMByiZeIMtxF51ZbEp0OcQq1kKysc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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