Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bd2e224260d0fd74221456a9c4d92e3f69a41d191b85327ff2d4d22770ab0928' 
  AND token = 'Vjk+y8tcsyBH6YSSq0vIUQxwYT1bag9KuOEO+AE3pgw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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