SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0064b59fd0552849d78145fd220366217e79f815899f753bdb0d7830618adce4' 
  AND token = 'uk0y5PYB4q+hGh6b+n3J/4luk1MH8zsKfF0jDK4gFfs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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