Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4bacb091a2d56b6f197338635d2b7b8b15acc7e1b4c18543ff9adafaf0896fd6' 
  AND token = 'XK9/d6PZlSI/kTQCJBk6ByOdSw0s07snjVktV9YhSj8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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