Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04a4a99488c5ada9d877354c2cb8cb8de28510afab3c3e1305bd0ececb714fc4' 
  AND token = 'EX6L9G2eR4MaejlLc2FKh+WTlRCfVMGxlN3QGeJ6WLI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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