Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8d3dab8e74552d5f627c989c756767cc802fdb4e9e95dac3831b0956b10eb0cf' 
  AND token = 'pib1MmCelb3EC2aDo9ZtJqrkklbYot5gJNd3lpG+zNo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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