Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fb3afc1e238127c67d0a349261c621d06e4116762d7206e56d59553f57cdfde5' 
  AND token = 'H5CRY2s9XDcPcP3QLU07pHrK/QNjSAgLukes7RwbfvA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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