Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3ddb4d5179661131c63fd3bb40d7312d2c5a41ccf2a5be48a08bac6faa88628b' 
  AND token = '7RiPOB8WcUNryKTVsOR4NNehk99/cn4gtfxvz1UYoXQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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