Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1a1e81faab86e05ea3c938e3482ae4d6da15905f07e2e4903ad9b3637fd0558b' 
  AND token = '09fEPcdtkBdPuMPg1Te1nyS4LoRpyOaJoZ7JLnassjw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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