Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9c59712d0702cfb0aeeb6049e92e006f7f0155b344c9b78fe81f704a63426b46' 
  AND token = 'HMuiYdNXWkrdxGblrWDUtCHn8qEEKu2CRgP39ZgfSDw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00063

JSON explain

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