Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '43cb365d14fa60580cdac3a5beaa8e49932cb4db73fb820310d56130503bd1a8' 
  AND token = 'pqN0PZboHch2fJe0yd5D7dUvqZKdH0mY/Da5TZ6k/OQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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