Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '632a93d1b94aea8f2e3abbf934265acc5e47d1a7904bdfea5721c2731fa45b94' 
  AND token = 'WgUaXZpRX2Ud/WnlTDTXsvrIrL25JOgAKyhcDLRiOks=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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