Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9bee665956e654005800e7a4ab329766c6bb588bc3d8ee86899aa40db1900c80' 
  AND token = 'Xcpj5VvCy17NIpOl0V8nDMam9n0LTSZ2T5dub9sj294=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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