Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2d2ded5041f0959fcd33b4cbb1291787d82ebe638e3199ef24e329261b921ed4' 
  AND token = 'DlDaJ14pvqVwoo6/01NQmdVkPyWnhkzwXef8sdKtFHM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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