Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '098682518ac65fefcc7a3e8eabd5b5e3315c193e36711fe04eeda77e6ac4ea92' 
  AND token = 'T1mdI3ze0zku3F+d/CW6iQYxbtruHyowHGpDfIuZnw8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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