Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '38c25e35070e21e228782c31832d2acdd9599d6d47b4f1a05153f8a4c9edde0b' 
  AND token = 'CvdBCgBC62rfio47IuO2oVmuCobRJr4agpxkKfbjuBw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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