Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22a09228fc5ad7e08c62cf19e6fb4f519bdaea9442da059b28c522f81925f89d' 
  AND token = 'paLn9oEAKYc2gSOh7m+V6JLgWcMqVEkA2w9H6iT6CI4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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