Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '03206cb55992451327bdf66f28835e1a771207a36fb841121d3ee35d951bcfdd' 
  AND token = 'lmxnIf9u16Il869e84D5bX5UnIf0pDjLcXup1J60XzM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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