Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7560ff328193cdbe23af416f7c4164e9f760cc59c5544f1f28d1f0cf1d566b01' 
  AND token = 'cojSNx7xKVD8u+Us1d8n4m0xzBcKzognUb2qFKCjq9Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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