Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'efa26a9ac83fafc0a974628d4c11379bca59e3e14431d1fed98656d75c0d3dfd' 
  AND token = 'UsUgIj3oxX0Da0PK2zn0o3KDxnk9cafda/MArjHs3Qg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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