Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e3e6db47bab38a5e169a6efdbad3db61d577420318cf49fab303fb8516b73303' 
  AND token = 'v3vDicGr/C2gpMILLO8nEGaqiGDv/SWz/fGylXME8ng=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00902

JSON explain

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