Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fb08635c6acc9cacc14914e8f910576771289a002efaf7e5335d5ed423077aed' 
  AND token = 'iOH8BEX6EUjBBz9sZ09D3KNtIotUvxU6t3tomaT73gE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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