Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '58558880fbcb18d52351afcae9350280d00580c9c95f0fad08ebe26da2f33a06' 
  AND token = 'd20xlZL1YjzNXhvXceOZfCyq0KcGqubVYMhVJ5mROZQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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