Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9d8e3b2af694d9ebaf1175b066df4042437abb5833e95a85d30092d00e796152' 
  AND token = 'pZSHDZTWB0NrV9X0MYJm73q/fBu0ec4wJ2fBO+fLffg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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