Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '434e28852473ae208271382f4d69f5f15e9eb52bd1668ceae58ec99188aceb80' 
  AND token = 'EmVD1ZKsB2SPOAvIfJB2d+zzcDFlC+9nLRgotZ2/4O0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}