Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95ab4afa9d8dfb37cbe9600492909408b541cbc8cd4d9e1021e79670edf14ce9' 
  AND token = '0bYwxxOlLnMHhKpq10E265/oxaJIcCThGrDMs7PNcY8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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