Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8881d9de94cccc28383023ea174b78138d34d7d334d7f8af8443730384ecb9f7' 
  AND token = 'CjMcg7e9HvYdkSQPDWJ8AJpDcgRsusKP4wqpGxOg4BA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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