Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '44bee99577654e1e12c2fc051553f6f29fed390cca9c71216fa4274a7065ddd0' 
  AND token = 'faThHpChPs0UiYN68uP9TUND5I+8/+pI1eA+0nHMIw8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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