Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1076957947cb5c5881a91ec9e94a753c3b040104a777e85291cce540838461b1' 
  AND token = 'BOITVbNZDirxyk7hNKThL0Lcwn7lMqG3yH6rXjCadrM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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