Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '015aec3322d4e7646887c08a5224d2b4fd8a1645decaf1a501086d85998be650' 
  AND token = 'sQgoUMHfAZ4zQtXp19M56QG8f4RmRHEsatjrpm441/0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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