Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '58782bfa8742226fcf52b86d0c16368b8c008bdce32ad1f24c39bfffdd0c96b6' 
  AND token = 'ABazEVjrfmg7h95DSl1jLAmYSCQ1tMWn0K7MvIoqBmc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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