Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2cd738ee116ee6b4dc5a9b01af2152568c808d4ae0f8b5c80057b14e11776eea' 
  AND token = 'tYtvzGByHCSt2dIjL6Rh7SVVmkEslM0Tg/MbZsYehck=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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