Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0ba45110e3fd760db496c128f4f17bf3b0d9ac8e9eb40adeb30dcdb77527d618' 
  AND token = '8cmpInNkwfiJWS+7OPMqtx5w5A+dH8T4Gtz2eQzIbzI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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