Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '66eadcc088e1c439a74b7105b3f99ee62c1760984d3c820a4e6118bacef2b0e7' 
  AND token = 'cXJliurlQRTKnec3W7Ch6m8+9m5oM1s1ujfl3RJa1qo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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