Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9132063dcb95e093da421a50ace2da7235794fc90e0c30be52b54e0f328cf458' 
  AND token = 'dl5if8E1EHyy3ei/oBWn7PSvW6c/WOD9YQyVdlLa5IE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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