Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24b960f0ed4003f195a9ede5aa071714818dfc798f6026d6079f16e37ee63f7a' 
  AND token = '/UbLStAcVX8WpAXMdJz6PQiTdafGCfaVs7QOAqVYWyc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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