Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '61081b4463767ccb4ef67d5b0114d869d68b7202c6f6cd0cf3484fec55b68dff' 
  AND token = 'BeqirkdICOx3i+G1rHQlqsjXFzzEjTfZuexdqXT9bto=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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