Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '25b454fcb07f4bd484253a8a447930f97579ed72142fcc0c5ef4060cb61fd484' 
  AND token = 'pM+rMD1dc0gANCNCANIQ3wKeLjHrRrBvrPcUQGxpqRk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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