Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c1db5214d13b66c0ef111ac8f43bc4861cc648129d372a3674b73877d47ecfe5' 
  AND token = 'Pvr6eJzGNsS5qw9dnY756X4zX7bZVp84O35C3HE5b7A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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