Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '0f34892806d2159c3fe43fb9d9bfe9d3f6855ff4bbb5764f66ac900e46a14f95' 
  AND token = 'qSEzgkkNDXat+NNNeel/Mb3PWy8KPRVV24PW9JzZTnc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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