Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7fc01192e67cf339589f0b564a15c7f49ea374c1240341a4ae51445665666ec1' 
  AND token = 'RCL5tPG41OFn+uf7bhWRqBx4PV8vBzHK8laF2yw7Gds=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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