Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '72467c24fa5ea999af0440a54e2b4f3606fd7238164e6d7b45387eae2d41d17b' 
  AND token = 'Yv86GSyNAIDhhyVGut+UCWIilHRvdTXxuaqlYchjmN4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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