Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd55996b71fd04f8f627497fb3302ef29e183a37e74fda5bd2b67ab1c18564d85' 
  AND token = 'nZ1yf/PkcnEdVGacLL3/2W8XzjCMD54Hf0jBrDb+H9g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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