Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8301c577abb2cfda085a1e3fef97f5aa9190be12b82d862e3d683a91cf8a129b' 
  AND token = 'DrLbi4+Nq7S6yh0ZZw/TaQ3LBp/++HUSXTtZNU7WVd4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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