Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '632627b2b58522a8a97900514995771557352851baf1f8beaf42b4d1fc84efe6' 
  AND token = 'PJWfB3aN8CdiVfFZcZ6CB5T9Hprh3QNu44AJy35HMZA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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