Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '997093cf76d57a9897aee56ce60ebb7999055d8e94b0fc7d6b6954d90688df9d' 
  AND token = 'eBf2XqywgCIBcw/SrT7VL+xE7t3u7/B6lNt5gpCCN58=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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