Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba97e3e92a1e75ffec4ce7003f4e8497a8294984d2100948dca9b5567d905bd9' 
  AND token = '2Txk37z1oubjnsD8WMJh7SDtohOk0onHY5sVsY9DfII=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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