Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '90bddeb64af84c9dbed44a734860694d7135de71d7c88ae36153701ec30a4048' 
  AND token = 'KQlhoXopfO4ZbROGQqE2CIgHHN5bA6OX0U1vJObflgg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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