Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '75a797c0057c17516c9975794727228ab1f989ee4a7ccbf4389726e859666d1b' 
  AND token = 'S2CjYNmZ9jDRHTAt+u0PexcFcgpXjIHihE3rgCTvoVw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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