Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4ce063812998fe320c95eadb19b9e0ddba803f13e62dad1fb243762259055ad3' 
  AND token = '9eTuC3exSRYbYNNbeaxb4VFQytK0ReTdOdAxdNd5KhY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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