Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b61c23ca584c5bf40a2e00dc666de9b39e1c4e0b16508bfa17f3fb387ff79d32' 
  AND token = 'yofbTsJz6V0B/FX2de+dyUUEKTfh8O6eW8vn1UVmX0U=' 
  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"
    }
  }
}