Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c23d660d291a116c6c53be2581995db3e954c2bab70c1b8719df83dc88b976e8' 
  AND token = 'zqig1qslUaC1Ntdd5H1dZ3L5KBesHGz4eRfDvn8Y7cI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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