Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bc265b7965b9c5dc97993758823c59fc5d0ea16db24f30cc4c5ba53d9518b9e5' 
  AND token = 'qZo2sz+jK+pxghf10auUk5dypTGO13e3ReUzSGdDraA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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