Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4fd9d63672bdacdf759565f14febc271a3596ac33b87410de238d35dd0473428' 
  AND token = 'hqqRFXyijNqi/CQbEE2cUMD4QGyxWKata7ooGkyBMkI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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