Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5af595145b97d46800d03c7f5e5051a27dd16ded9f86ccb97cbc743ba3906e1d' 
  AND token = 'rI04teIgpmbo3TEotwOpG+StFrHUgYS2/MsP8JU8cnE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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