Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '170aeffa3182faa210363bab92fc32f99cbe88b3b13ab36589f6271d5830ef47' 
  AND token = 'BRAINSoAMqDHKG/jryk1mqaIkmUXhOWpcCdmubrxFlE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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