Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '79789040e977c0d212bbb69b2ae7222f29e7effe97aa4e896113b7d1e2c5a065' 
  AND token = 'SDKPKxyugzaWwSLzq7MLialIdlSDB0p1Cj60sh5WyTQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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