Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8f77975e8ec46a9f583af395e1fbe1600b4ad2e717c9001503ca86ed130cc445' 
  AND token = 'B0vpDtX+b5/i6p0aLsOMQ9oc+6WVYMej0xMtXCfchI0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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