Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '508f17440a58ab2ecd775c348feb5dc3509f6db48f8b32ad1637e0cc16364221' 
  AND token = 'in7bE4g2zEisRuOeyfPJrW5DJd6tLr77z6Ij5dit4pQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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