Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0ba7eddaac0e459e04b86c9d5fe1e0fba86c7aed32e7da394a763c8db1530bcb' 
  AND token = 'o/TL9duz04P4Eka4GfmL+BfQliv/K6Mk1DS2uNRbl1k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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