Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8d2cee0024610d6bf6939d82b38856d84cd9bba662b5b6433c625e1dc7afc04e' 
  AND token = 'fYUPS1LrGtCgn7TVWLi2qQc0x6Z+XqlnR76r8gGJN/Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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