Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1c5cb387a5040a276a424080fa02b8e1e6241a08f489ae872b1c85d683af84dc' 
  AND token = 'E4n3QI45EGG4V/Vw5goVWcQfsqu0g2Yf6uH/hrfK5rs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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