Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9069e751de2c892aa8d3e6d17a3897649c6356005e33a56822987a7fd0dc53e2' 
  AND token = '6UuRp0nFp0n4pmGcCdMkprf31THXwIJsHmJiPofPE24=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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