Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0ff25586d59f73ee1d51ab0c6f7a804ff744301d72955d39f868e6bfd1543b75' 
  AND token = '45UFMXZTkwJxAcFBm6tH11mVDLAXlpE1jX3dnWsvLnw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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