Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bad0e9eab4ae335f874f467a503c62acdc6c37447d377773ceec0787938a9691' 
  AND token = '4eEJarWCXpJldT4CvkegtGTv2bUh2aOQD2OpDwXyj1k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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