Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '177da3f0f9973159b43e206b324f2f50c3a223699a16ff0ff32f16383f8edaf5' 
  AND token = '/Bl5MOEQMhjkqOZQOQWaJ0UOSPKv+kebT02CIdZiXRY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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