Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0c06e5e90e82e69c339e94c067582ceecd04d5ade8d982282e7012b9b0d23710' 
  AND token = '50a4FVAnPC6s2H9uZ92AmA5fnuUQ3bMqpMRxl8o4FQg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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