SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9b442d73705244bfa34f50d3a26664ce417f0868a8b0541f284bf18fdf7a2179' 
  AND token = 'XmveBtVH+Pg4kd1PUCfqdKQULS5Y1AFV13dB+ZDLwPU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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