Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1dcef2c32a42697602a79797039d95766cedbeba89338d0cb430506d1fce3ac7' 
  AND token = 'wp1Vu5IuLmxoPyzuHA2cY0Ku7mQffZ4YqZlK6cs+YiU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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