Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2c847c4177a686d7a7f686695b9d66ec37fe0016dedd75a9749d784b756b132b' 
  AND token = 'kR2OeoTFdtsuR/Ze/fk0g6fuqxIg2bhL0xh2g0kZu/U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00083

JSON explain

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