Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7b975a56da7b652045e8f397e1734d9f59389bec5feec2474c78aaf75cd9a230' 
  AND token = 'v59xKdfM23niXrwycnL6VTa9l2YQy6JgFUk0lO3bhVM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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