Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '69a29b92e2e81d0e7b4879c3450c73945e07c2ac130a0250438be27f9396b5c6' 
  AND token = 'W28ZVMPNcwKutKZdZLXWgAynU71iEIUXUdc3gE1xLLQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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