Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0f957c505e43ccdaa9929cf0bda1cfa74879f08598ef4e5860f40e7ceca0919e' 
  AND token = 'dtRm8obCQqXtVWQVERNCkJukqCwI+Mn9bnHvoY5LPVA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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