Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8be7e267f4c2e690071443e086b1516414e0759deab6e4da35ebf6c9f88dbbed' 
  AND token = 'qRI75/QA2rOC7U55YHXHiQpc6VJuw0nw+i3FFeOPXCc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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