Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c4922429e61c6e333934343ba0b86fc545cbaf7e82473f8ba7a408d5a2fef9a3' 
  AND token = 'O2f26j2to01tvyFZ7hFC7u9KAfPElLmKnsNz/qoAO8M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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