Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7723552f8051128cf18f87113aaf532e5189a3ecf77c292ebb895a7feea86b34' 
  AND token = 'FQE5gIJBbntaEBGSiwzXUKwWkSJOu/5mF0etM+II1kI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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