Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '76059f36993912d6078257e4f90c25acd8eb8325fe501d6b495a7ce14b8dd5ec' 
  AND token = 'wjy54d/8yIIblsUTlnb264SVgE24zk12czXUXyI6tAE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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