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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b9194d4e306a89b9fd22ebad6aede04e8c89fa05846c57bd2ec27cadd122f1dd' 
  AND token = 'gBjFvB67Km78jIJ6N3RYn7RNbSE7FMMMZ7Fr8t3cX1s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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