Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95903a07f863b069fea8df6c7223e92e339e7c415e18e922d2d530945d327059' 
  AND token = '0AZrqsV0F+xN+wB4+QP5b2DRTrCZgCJT5niTNJFmSDI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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