SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '182aacc060ed4e8f80e9cd358666bf5d2c870925d1a73d9a0af4176198c9e31d' 
  AND token = '/z15CKCvgCykiunJtjq2o2rfQ5j6dXzG+BOyAWt6lgs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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