Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f494815fbc2606f1d682a6186bd1fc4511f49783f9feca61bca4f8077b576466' 
  AND token = 'Sc22gKxQ7zUOgXOn8O/5aWv5uk2qX/qLVS4onj0Mv1I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}