Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b18add402d06938cb6f16d1a626cc7b190c568101af8f26d1c7144685647844c' 
  AND token = '2kANigTcKJZ34dwaF/y8R5c39jQ4lXli3su6yLNsn/k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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