Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd5aa2de060dc2f624dcd30d13fbe35caa5f4a9698b8853800c33545fb26f2d5e' 
  AND token = '4QZKNL0m2WRlu6JdUOiLBH7j93THS38HYup7EivZHpE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}