Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e32595b17c1c3b7d33e471e339c902afa15d2e20672d4b7b8075372acf81bc81' 
  AND token = 'AzjL69Ouy6VAjJfdd7zgg7SfXaIuxEw5BrTLXfT/0Hw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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