Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2cb8094c053f531c5eff9e8730fae5b0d6f92de24244e814111839396aa6b0d7' 
  AND token = '7+UCUTOs9E7PT2KyBe7xG+X75AzPVlE1BW1G7zOKS/w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00059

JSON explain

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