Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '195a9ca6ce3d7ba8b26090251ae9526e553626a41d24b18079259fbb868bcbc1' 
  AND token = 'zBtV7C08eQFyFxaM+PjneZvQ5K8OsDfgX6kt8jTp0/M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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