Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0b264c3691c78710e6cf7226aabcdf26349c49fe92ff5930afe75c5095bbd2b2' 
  AND token = 'bNCJG+PYekElR+H/pHSZk8iQqn5DPC/OgfM0cIkpoZo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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