Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cced285b03af1dc1a523b6d0dcfe86236deea0847abd39c13cb493c8cf2f8d18' 
  AND token = 'L1w521V04STlvhIga/sHF7aVHN9Nfp1+r4Xu2Ro4KzY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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