Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '600e478a82895e0c64c8f66604e92d26027e9176c93c0e0599529d019ecc93ee' 
  AND token = 'C2WINl/+eohqYMrZfwCsPuZ8rVuTsXaoikCViW2DOV8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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