Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0de0a432b22074d622508341ed79d7eb7cb0b7328241229ed71ceb3bc5ed6198' 
  AND token = 'E4F61PhJIp5AfESrxgfq6iOQM65a7h5vf80kGag+QgM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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