Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '08b3ecab45a213e4629defed4a055086a3dfaffcee1ae391851f284bd28b679b' 
  AND token = 'In+X4jvD9uhRBvW8xX7pZYJokTjIubDy4zU2HbTuzoM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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