Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cf896355d51b2e96ade1a58f8f14ff1f400c408fc45b19e40fcc833d5afaef32' 
  AND token = 'C2zi7IuIi4BgZqv3bKYSUju9EI7S7Z4YrocVZZRkmjw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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