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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b1eb1cb9404e7969fc223245cc208bd0f07e1c96405162bdc20e29d171cc5439' 
  AND token = 'vcKRNZelKn/KcKGUWP7eFn9X+g2g7H5K/jsjc1DEGF0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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