Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aab6910cca55919bf1d3cb4e5c4b560c279e0db26e6088da01185f695b903882' 
  AND token = 'foBC8xi7/ski+F0Y9kONk/hrmYfKjoPTsdu2adOeeuE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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