Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cf4d05326575f1899e30adf0a94bf701fabcd00bad5b107bd6b2b18106fd7b0d' 
  AND token = 'wk2DLyF4TBoQs2Q2UBpmnSqD0YLivA7Rx5y3iy6Rdw4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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