Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '887bfb0af5e704fdd4be01a159e9f4e72d9662cb9b73470a4353547c7faf117e' 
  AND token = 'AhPpyxKpdN8JwQWD2EAGdYSUoOQR8PiCJug5VUJwkyQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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