Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e734460fc1b8b6ca468b23a0b4b0848604d1d2918c154cfb26a5425dfdd862e0' 
  AND token = 'k76NBSc6XL/viQS8fwR5z/sF8z1y2RxF5t6r9mYAc2Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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