Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e0f1edf8b67ffc6214ebd90e033976f0904dd3e66cb6278389a3949b2397157d' 
  AND token = 'ESCEUaFngWNkkG+PAipmvJoeGEyN4BRKBRtCi8l6qrQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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