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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '142839772304e05ed3f46811edb43a027aae4e85c8d1673915055865a776b7fc' 
  AND token = 'QzDW0Z2v9CWp2HpRzs9LrBvT7zPMJ4e7o9w9ektcjYY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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