Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '93dbb7eab5ad62cf651d6f58b8d9226ba99bf5b4a6067082bbdbe7bdd9ef4634' 
  AND token = 'BlQZ3iQdKh+Z8UN9t2Yav0u9FOE3mHQnegfhJEWtRrE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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