Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '099908496ec5107b6bac3e11c084b8c9a8023e068fd7a9f7929f89a0c98727a7' 
  AND token = 'Wujra9ddCe41/OV+voNA2zyuBgZFlni+FalQw4WMSc4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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