Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0fbc8cec426040ed0dddc21e129e5b7645510bb74cfe462c24da709828b807d0' 
  AND token = '2p9wFYlgAuOV0igpJ1jfKyGlbDYd3zSJWSFU//uQBIg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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